None
COMPRESSED AIR HAULAGE 485 14 ft. long X 6 ft. 6 ins. high; weight, 22,000 lbs. Trains of 32 cars, each weighing loaded about 9,000 lbs., arc hauled on i§- pcr cent, grade, in favor of the load. 9. At the Aragon Iron ^line, Norway, Mich., is an H. K. Porter locomotive. Weight, 7 tons; height, 5 ft. 2 ins.; width, 4 ft. 2 ins.; length, 12 ft., over all. Four 24-in. drivers; wheel- base, 48 ins. ; gauge, 22 J ins. ; cylinders, 7X12 ins. ; tank pressure, 700 lbs. ; working pressure, 140 lbs. ; charging time, 30 to 60 sees. Haulage distance, from 1,200 to 4,000 ft. ; pipe-line, i ,800 ft. ; in- cluding 750 ft. down the shaft. Locomotive hauls four 20-car trains per 10 hrs., from each of 10 loading places. Weight of loaded train, including locomotive,43 tons; weight empty train, 18 tons. Compressed air is furnished by a Norwalk 3-stage charger; steam cylinders, 14X16 ins.; air cylinders, loj, 7f,and 2^ ins. X 16 ins., compressing 125 cu. ft. free air per minute to 800 lbs. At the compressor there are two receiver storage tanks, each 3x17 ft. 10. Compressal-air haulage plant at No. 6 Colliery of the Susquehanna Coal Co., at Glen Lyon, Penn. Following is an abstract of tests made by J. H. Bowden and R. V. Norris.* Though the plant is not of the latest pattern, the results given will be found useful. Compressor: Norwalk, 3-stage; steam cylinder, 20X24 ins.; air cylinders, 12 J, 9 J, and 5 ins. X 24 ir^s. ; capacity, at 100 revo- lutions, 296 cu. ft. free air per minute, compressed to 600 lbs. Main pipe-line at No. 6 shaft, 4,380 ft. long, 5 ins. diameter, with 5 charging stations, and capacity of 608 cu. ft. Branch line, in No. 6 slope, 3,100 ft. long, 3 ins. diam., with 3 charging stations, and capacity of 159 cu. ft. Locomotives: two, by H. K. Porter Co.; weight, 8 tons; tank capacity, 130 cu. ft.; pressure, 550 lbs. reduced to 160 lbs. in an 8-in. auxiliary reservoir, of 4.2 cu. ft. capacity. Cylinders, 7X14 ins.; four 24-in. drivers. At No. 6 shaft the run averages 4,000 ft. each way, on J to 2f- per cent, grades, averaging about i per cent, in favor of the load. * Transactions American Institute of Mining Engineers, Vol. XXX, p. 566. 486 COMPRESSED AIR PLANT Run at No. 6 slope averages 2,100 ft., with nearly the same grades. Cars weigh 2,800 lbs. empty, and about 9,800 lbs. loaded, and are hauled in trains of 12 to 20. The shaft loco- motive hauls about 355, and the slope locomotive 320 cars, per 10 hours, doing the work of 32 mules. Tests on the compressor showed 150 indicated horse-power at 131 revolutions, compress- ing 387.8 cu. ft. free air per minute. The combined capacity of both pipe-lines is 767 cu. ft., which, at 600 lbs. gauge pressure, is equivalent to 32,500 cu. ft. free air. Capacity of locomotive main and auxiliary tanks, 134.6 cu. ft. At 508 lbs. (at which pressure the tanks equalize with the mains, the initial pressure being 600 lbs.), this is equivalent to 4,845 cu. ft. free air. In standing 12 hours, the pipe-line pressure falls to 350 lbs., the loss per hour from leakage thus being 974 cu. ft. free air, or 4.18 per cent, of total air compressed. Table LX Air Consumption Shaft Loco. No. 2 Plane. Number of trips, empty I 3 Number of trips, loaded ! 3 Average number cars per trip, empty. Average number cars per trip, loaded. Average cu. ft. free air per trip, empty Average cu. ft. free air per trip, loaded Average cu. ft. free air per round trip. Average cu. ft. free air per ton-mile, on gross tonnage Average cu. ft. free air per ton-mile, on net tonnage .. 15-33 13 1,724 1,631 3>355 No. 3 Plane. 10 10 12.7 13 5,686 1,898 7,584 T13 203 Slope Loco. 16 15 II. 4 II-3 1,230 599 1,829 71 128 Average volume free air used by both locomotives per ton- mile was : gross, 100 cu. ft. ; net, 180 cu. ft. The greater quantity of air used by the shaft locomotives is due to the heavier grades and switching required. Another test showed a total consumption of 223,020 cu. ft. free air, for hauling 676 cars per day. The volume of free air apparently compressed for this work was 279,200 cu. COMPRESSED AIR HAULAGE 487 ft., of which 83.4 per cent, is accounted for, leaving 16.6 per cent, for leakage and slip in the compressor, leakage in air lines, and changes in temperature. The cost of the plant, omitting boilers, was : Compressor and extras '2,955 • 75 Two locomotives and extras 5,869. 76 Pipe-line: 5-in. line, 6,000 ft $2,914. 32 3-in. line, 4,000 ft : 1,240.46 4,154.78 Steam connections to compressor 278. 27 Material and labor, compressor house and foundations, installing pipe- line, etc ii52S-23 Charging stations 372 . 2 1 Total cost $15,156.00 The average cost of operation of entire plant, for 2 years, on basis of 170 days' work per year, was $12.60 per lo-hour shift, including an allowance of $2.32 for steam for compressor, fur- nished by main boiler plant of mine. Adding proportion of fixed charges, with interest, depreciation and repairs, the daily cost, on basis of 300 days' work per year, would be $18.52 per day. For the 2 years, the average cost per ton-mile was as follows : Table LXI Operating Costs 1897 (179 Days). c c Shaft locomotive, gross tonnage i»485 Shaft locomotive, net tonnage ' 825 Slope locomotive, gross tonnage 648 SloT)e locomotive, net tonnage 360 Both locomotives, gross tonnage 2,133 Both locomotives, net tonnage 1 , 185 o & Sii. II. TI II 22 22 12 12 12 12 23 23 0-75 1-35 1.72 3-00 1.05 1.89 1898 (160 Days). e i»52i 845 720 400 2,241 1,245 (A o U & S * u SI2.00 12.00 12.00 12.00 24.01 24.01 0.79 1.42 1.67 3.00 1.07 1-93 In these two years the saving over the expense of the mule 488 COMPRESSED AIR PLANT haulage, previously employed, was $14,218.00, or nearly the total cost of the haulage plant. II. Following is the cost of a large colliery plant, as given by Beverly S. Randolph,* who installed and afterward operated it: Three-stage, compound compressor >5,3oo. Pipe line: 5,600 ft., 5 in 85,600. 3,100 ft., 2§ in 1,700. 1,000 ft., ij in 300. 7,600. Two main locomotives, weight 30,000 lbs 6,000. Five gathering-locomotives, weight 8,000 lbs 10,000 > Two boilers, each 80-horse-power i ,000. Installation, labor, and material 4,000. Total cost $33,900. This plant includes an unusually large number of small gathering-locomotives, for collecting cars from the individual workings and making them up into trains for the main haulage lines. If the locomotive equipment had consisted of four 25,000-lb. engines, costing, say, $2,800 each, and which would do the same work, the total cost of the {)lant would be reduced to $29,100. This cost compares ver^' favorably with that of electric-haulage plants of the same capacity. * Transactions Institution of Mining Engineers (England), Vol. XXVII (1904)^ P- 433- INDEX Abrams, H. T., test on air-lift pumps, 450 Absolute pressure, temperature and zero, 49 Adelaide drill, 300 Adiabatic compression, 51-56, 58-66, 68-74, 113, 160-164; equation of, 60, 68 Adiabatic expansion, 265-267 Adjustable steam cut-off valve, 34 Aftercooler, no, 192 Ainsworth (B. C), hydraulic air compressor at, 241, 242 Air and steam cards combined, 35 Air card, 57, 61, 64, 67, 70, 72, 112, 172, 173, 214; elements of, 168; of wet and dry compressors, 63; of stage compressor, 112, 172 Air-cataract valves, 139 Air compression: at altitudes above sea -level, 216-222; by direct action of falling water, 235-247, 292 Air compressors: belt-driven, 12, 36, 44-46; builders, list of, 48; chain-driven, 12, 44; classification of, 8, 9, 10, 12; dry, 62, 63, 81; for compressed-air haul- age, 474-479; geared, 44, 46; half-duplex, 16; horse-power of, 160 et seq.; hydraiilic, 235, 247, 292; makers of (see Compressors); performance of, 159-189; water-driven, 36-44; wet, 62, 63, 75 "Air-Electric" drill, 321 "Air-Electric" track channcler, 418, 421 Air engines, 261-272, 282, 284, 290 Air-feed hammer drills, 343, 35o. 352, 357, 360, 366, 369 Air governors, 106-215 Air hammer drills, 348 et seq. Air inlet, area of, 117, 118, 127; conduit for, 134 Air inlet valves, 1 15-135, 142-158 Air-lift pumps, 438 et seq. Air pressure for machine drills, 324, 350, 358, 363, 366, 377 Air pressure regulators, 196 et seq.; American, 198; Clayton, 197, 198, 201; Ingersoll-Sergeant, 206; Laidlaw-Dunn-Gordon, 207; Nordberg, 209-215; Norwalk, 198-200; Rand, 203; Sullivan, 204, 205 Air pulsator for "electric-air" drill, 321 Air receivers, i:)o et seq.; functions of, 191; sizes, 190; underground receivers, 192, 193, 277, 432 Allis-Chalmers compressors, 12, 29, 30, 116 AlUs-Chalmers mechanically controlled valve-motions, 149 Altitudes above sea-level, compression at, 216 et seq. American Air Compressor Works, 48 American air-pressure regulator, 198 American InstUule oj Mining Engineers^ Transactions ofj 229, 232, 485, 488 American Locomotive Co. compressed-air locomotives, 462 American Machinist, 112, 209, 217, 255, 272, 291 Anaconda Copper Mine, compressed-air haulage at, 483, 484 Angelo and Cason Mills, South Africa, tests on air-lift pumps, 450-452 Anthracite Coal Operators' Association, Transactions of, 468 Aragon Iron Mine, Mich., com pressed -air haulage at, 485 489 490 INDEX "Arc-valve'* tappet drill, 311, 312, 313 Area of air inlet, 117, 118, 127 Auger coal drills, 407 Area of discharge valves, 140 Association of Engineering SocietieSy Transactions of, 435 Auxiliary reservoirs for compressed-air locomotives, 466, 468 B *' Badger" drill, 309 Baffle plates for air receivers, 107, 195 Bailey & Co., Manchester, piston valve, 158 Baldwin Locomotive Works compressed-air locomotives, 460, 462, 465, 482^ 484 Ball-and-socket joints for compressed-air locomotive charging station, 470-472 Barre quarries, Vermont, 374 Barrow drill, 300 Behr, H. C, 273; air-lift pump experiments, 447 Bell, J. E., experiments by, 328 Belt-driven compressors, 12, 36,, 44-56 Bendigo district, Victoria, Lansell's air-lift pump, 453 Bends in air pipe, 260 Bernstein, 246 Bjorling, P. R., 76, 90 Bleeder valve for compressed-air locomotive charging-station, 47a Bowden, J. H., test on compressed-air haulage plant, 485-487 Boyer hanmier drill, 371 Boyle's law, 50 Breakage of drill parts, 333 Buck Mountain Colliery, compressed-air haulage at, 479 Burleigh compressor, 2 Burning-point of cylinder oils, 225, 227 Burra-Burra Mine, compressor at, 20; drills at, 375 Butte, Montana, compressor explosion, 282 By-pass for air cylinder, 90 Cable-reel electric locomotive, 457 Calumet and Hecla Copper Mine, 3 Cam-controlled poppet inlet valve, 156 Canadian Electrical News, 241 Canadian Engineer, The, 236 Canadian Mining Institute, Transactions of, 277 Capacity of air for moisture, 274 Cards, air, ^y, 61, 63, 64, 67, 70, 72, 112, 168, 172, 173, 214 Camahan, C. T., Manufacturing Co., 371 Carper, J. B., experiments by, 324 Cason and Angelo Mills, South Africa, tests on air-hft pumps, 45o-4Sa Cassier^s Magazine, 484 Cataract valves, 138 Causes of freezing of moisture in compressed air, 275 Cave rock drill, i Chain-driven compressor, 12, 44 Champion Iron Mine, experiments at, 330 , r 1 o u Channeling machines, 409 ct seq.: depth of cut and speed of work, 418; shape of bits, 414, 417 Channing, J. Parke, 20, 170 Charging compressor for compressed-air locomotives, 474-479 Charging station? ^or compressed-air locomotives, 470-472 Charles's law, 51 INDEX 491 Chattering of inlet valves, 119, 120 Chersen drill, 300, 378 Chicago Pneumatic Tool Co., 371 Chodzko, A. E., 273 Choking of air pif>es by ice, 275, 277, 278 Christensen compressor, 46, 48 "Cincinnati" air-valve gear, i3g, 148 Clack valves, 115, 131 Clark, D. K., 51 Classification of compressors, 8, 9, 10, 12 Clausthal Silver mines, hydraulic compressor at, 246 Clayton compressor 2, 48; governor for, 197, 198, 201 Clearance: in compressor cylinder, 66-74, 85-90, 113, 116, 221; in air engine, 265, 268-270 Clearance: projxjrtionate and disproportionate, theory of, 70-74 Clemens, G., 482 Cleveland hammer drill, 371 Cleveland Pneumatic Tool Co., 371 Clifton Colliery, England, explosion in compressor, 226, 233 Climax "Imperial" drill, 300, 315 Climax hammer drill, 369, 371 Coal cutting machines, 380 et seq.; comparison of, 407; disc or circular saw, 385; depth and width of cut, 384, 385, 389, 394, 397; endless-chain, 380- 385; pick or reciprocating, 381, 388-405; rotary-bar, 380, 385 Coal punchers, 388-405 CoUadon, i, 78 Colliery Guardian, 277 Colorado Fuel Co., 406, 407 Comparison of types of compressors, 18 Complete expansion, working with, 264-267 Compound compressed-air locomotives, 474-484 Compound steam-end for compressors, 22, 24-32 Compressed-air drills, 294-379 Compressed-air engines, 261-273 Compressed-air haulage, 456-488 Compressed Air Machinery Co., 36, 48 Compressed Air Magazine, 141, 195, 229, 245, 270, 272, 427, 441, 450, 482 Compressed-air pumps, 277, 423-437, 438-455; adjustment oif air pressure, 432; eflSciencies of, 431-433; preheating for, 434-437; prevention of freezing in, 277, 433 Compressed air, reheating of, 279-293 Compressed air versus electric transmission, 5,6; versus steam transmission, 3, 4, 5 Compressed air versus steam for direct-acting pumps, 425-427 Compression cur\'e, construction of, 166 Compression of air: laws, 50 et seq.; at altitudes above sea-level, 216-222; by direct action of falling water, 235-247; heat of, 53 et seq.; stage compression, 63 et seq.; Q5-114, 160-164 Compressors, makers and names of: AUis-Chalmers, 12, 29, 48, 116; Burleigh, 2; Chicago Pneumatic Tool Co., 48; Christensen, 46, 48; Clayton, 2, 48; De la Vergne, 34; Dubois- Francois, 2, 95 115; Franklin, 48, 152, 198; Hanarte, 77; Humboldt, 75, 76, 130, 139; IneersoU-Rand, 9, 12, 13, 17, 25, 26, 36, 41, 45-48, 8 , 198, 474, 476, 478, 479; Johnson, 89, 129; King-Riedler, 10, 16; Laidlaw-Dunn-Gordon, 9, 10, 11, 12, 14, 15, 81, 83, 84, 86, 116, i39» i47« 148; Leyner, 12, 21, 26, 48, 107, 131, 132, 133; Nordberg, 19, 48, 81, 82, n6, 209-215; Norwalk, 2, 12, ig, 20, 48, 99, 100, 116, 125, 474, 483, 485; Rand, ?, 3, 85, 115; Rand and Waring, 34; Riedler, 12, 27, 28, 139; Sullivan, 12, 22, 23, 48, 105, 106, 150, 151, 475 Congelation of moisture in compressed air, 93, 274-278, 433 Consumption of air: by air engines, 270, 271, 283-284, 302; by direct-acting 492 INDEX pumps, 428-431; by machine drills, 324-330, 352-358, 360, 366,377; by pneumatic pumps, 440> 44i, 447» 449, 45°. 452 Conveyance of compressed air in pipes, 248-260 Cooling: modes of, 55, 63-65; in receivers, 191, 194, 276, 277 Corliss air valves, 43, 142-152, 209-213 Corliss steam- valve motion for compressors, 20, 22, 29-31 Couch, J. J., machine drill, i Cox, Wm., 198, 252, 427 Crane, W. R., 340 Cresson Mine, Cripple Creek, 341 Cummings, Chas., system of compressed-air transmission, 272, 437, 442 Cushioning in machine drills, 303, 3 "» 3^2, 332, 333 Cut-off in air engines, 266-271 ; nominal and actual, 268-270 Cylinder dimensions of simple pumps, 427 Cylinder proixjrtions for compressors, 35 Cylinder volumes: in stage compression, 101-104; of air engine, 270 <t Dancing" of inlet valves, 119, 120 D'Arcy formula for loss of pressure in pipes, 251-255 Darlington drill, 300, 319 De Kalb, 111., tests on air-lift pump, 447 Delivery valves, 136-141; cataract-controlled poppets, 138; effect of leakage, 136; mechanical control for, 143; poppet type, 136, 146, 148, 149, 150, 152 Denver Rock Drill and Machiner>' Co., 371 Deposition of moisture from compressed air, 274-277 Dickson Manufacturing Co. compressed-air locomotives, 483 Dingier Machine Works, Zweibruecken, 131 Dinnendahl, R. \V., 319 Direct-acting pumps, operation by compressed air, 423-437 Direct compression by falling water, 235-247 Disc or circular saw coal cutters, 380, 385-388 Discharge valves (see Delivery valves) Discharge-valve area, 140 Displacement pumps, pneumatic, 438-443; consumption of air by, 440, 441 Doble drill, 300 Dover Iron Co., compressor, 158 Drill repairs, 333 Drilling records, 334-341, 372-376 Drills, rock: air pressure for, '36, 324, 327, 335 et seq.; 375, 377, 378; reheaters for, 290; repairs, 333; records of work, 334-341, 372-376; valve motion of, 332 Drinker, Tunneling^ Explosive Compounds, attd Rock Drills, 294 Drummond Colliery, compressed-air pumps at, 277 Dry compressors, 62, 63, 81-94 "Dr>'" roheaters, 289, 293 Dry versus wet compression, 90 Dulx)is-F'ran^'ois compressor, 2, 75, 115 Duisburger Maschinenbau, 319 Duplex compressors, 9, 10, 12, 17, 18, 23-32 Dust allayer for machine drills, 316, 370, 378 Duty of machine drills, 325, 329, 334-341, 371-376, 378 Kast Rand Proprietar>' Mines, Ltd., tests on air-lift pumps, 450-453 Ebcrvale, Luzerne Co., Pa., tunnel at, 257 Ef^'iciencies of air-lift pumps, 441, 447, 448, 449, 452 Kfticiencies of direct-acting compressed-air pumps, 431-433 1 INDEX 493 Efficiency of compressors, 20, 108, no, 122, 133, 171, 172, 176-189, 240, 244 Efficiency of reheating, 281-284 Electric-driven compressor, 44, 46, 47 "Electric-air" driU (see " Air-electric " drill) "P^lectric-air" track channeler, 418, 421 Electric versus compressed-air haulage for mines, 456-458, 488 Electric versus steam locomotive haulage for mines, 456 Empire Mine, Grass Valley, Cal., compressed-air haulage at, 480 Endless-chain coal cutters, 380, 385 Engineer^ The (London), 450 Engineering and Mining Journal, 236, 240, 244, 246, 330, 436, 484 Engineering News, 89, 375, 447 Esmeralda Mine, Silverton, 375 Expansion curves, air and steam, 263, 267 Explosions in air compressors and receivers, 223-234 Externally heated or "dry" reheaters, 289, 293 F Fergie, Chas., 227 Ferroux drill, 300 Final temperature of air compression, 53, 54, 165, 166, i6q, 170, 224 et seq, "Fitchering" of drill holes, 7,zz. 334, 340, 34i, 34^ Flash and ignition points of cylinder oils, 225, 227 Flat River, Mo., drilling records in lead mines, 337 Flottmann & Co., 371 Flottmann hammer drill, 371 Four-stage compressor, 474-478 Fowle machine drill, i F'ranke hammer drill, 343, 371 Franklin compressor, 48, 152, 198 Franklin pressure regulator and unloader, 198, 206 "Free" air, 49 Freezing of moisture in compressed air, 93, 274-278, 433, 434 Freimann & Wolf, 319 Frick, H. C, Coal and Coke Co., 406 Frictional losses in compressors, 20, 97, no, 159, 162, 171, 175 et seq., i86 Frictional resistance in air pipes, 248-260; due to bends, 260 Friedrich, G. C. H., tests on air-lift pumps, 449 Frizell, J. P., 236 Froelich & Klupfel, 319 Fuel cost of reheating, 283-285, 293 Full pressure in air engines, working with, 265 Functions of air receiver, 190- 194 G (iay-Lussac's law, 51 Geared compressors, 44, 46, 47 General Electric Co., 385 (ierraan machine drills, 300, 319 Gillotl and Copley coal cutter, 388 Glen Lyon, Pa., Collier>', compressed-air haulage at, 485-487 Gliickauf, 246 Goleta Mining Co. water-<iriven compressor, 36 Gordon hammer drill, 378 Governors, air, 196-215; American, 198; Clayton, 197, 198, 201; Franklin, 206; Inger.soli-Rand, 198, 201, 204, 207; Ingersoll-Sergeant, 206, 207; Laid- law-Dunn-Gordon, 207, 208; Nordberg, 207, 209-215; Xorwalk, 198-200; Rand, 202; Sullivan, 198, 204, 205 Grades of mine haulage tracks, 472, 479-486 494 INDEX Great Western Pneumatic Tool Co., 371 Guttermuth air valve, 115, 131 Guttermuth, experiments on reheating, 284 Gwin Mine, Cal., pump reheater, 436 H Halsey, F. A., 112, 217, 218, 255, 256 Halsey pneumatic displacement pump, 443 Hammer drills, air, 343-379; air pressure for, 377; depth of hole and speeds of work, 371-376; makers of, 371 Hanarte compressor, 77 Hardsocg hammer drills, 348, 374 Hardsocg Wonder Drill Co., 371 Harris pneumatic displacement pump, 442, 443 Harrison pick machine, 388, 392-395 Haulage by compressed-air locomotives, 456-488 Heat curves, 54 Heat losses in compressors, 91 Heat of compression, $1 et seq., 78, 79, 84, 91, 95 Heat, transference of, 55 Heating of air-cylinder walls, 114 Henderson, tests on air-lift pumps, 450-453 Heron & Bur>' Manufacturing Co., 48 Highland Boy Mine, Bingham, Utah, drilling record, 339 High-pressure transmission of air, as influencing freezing, 276 "High-range" compressed-air transmission, 272, 273, 437, 442 Hill, E., 220, 230 Hirnant drill, 300 Hiscox, G. D., 268 Hodges, C. B., 484 Hoffman, P., 319 Holman drill, 300, 316-318 Homestake Gold Mine, compressed-air locomotives at, 458, 484 Hoosac tunnel, 2, 256 Horse-power: of air engines, 265-271; of air-lift pump, 448-450, 452; of com- pressors, no, 159 el seq.f 240, 244 Horse-power per cu. ft. Leakage of compressed-air pipe lines, 252, 256, 259, 486, 487 Leaky air piston, effect of, 113, 229, 231 Leaky discharge valves, 223, 229, 231 Lees, T. G., 85, 224, 226 Lens Colliery, France, compressor air valve motion at, 156 Leyner, J. Gc»o., Eng. Wks. Co., 48, 371 Lcvner compressor, 12, 21, 26, 48, 131-133, 134; intercooler, 107-109; reheater, 285, 286 Leyner'drills, 343^, 344, 345-348, 37 '» 372, 373> 375 Lightner Mine (Cal.), reheating at, 292 Link Belt Machinery Co., 385 Lippincott, J. B., 375 " Little Champion " drill, 312 "Little Jap" drill, 371 "Little Wonder" dnll, 371 Locomotives, compressed air, 456-488; construction and operation, 458 et seq.) cylinder pressures, 466, 469 Locomotive charging compressors, 474-479 Long-wall coal cutters, 384, 385-388 Lord, E. P., 468 Los Angeles aqueduct tunnel, 375 Loss of head in pipe transmission, 249-258; of |X)wer, 248 Loss of volimietric capacity due to piston clearance, 85, 86, 88, 89 40 INDEX Losses in air compression, 15Q-162 Losses in transmission piping, 248-260 Lubrication of air cylinders, 93, 223, 225, 227-229, 233 Lubricators, sight-feed, 233 M Machine drills, 294 r/ seq.\ classification, 299; column or bar for, 299; consump- tion of air by, 324-330; 352, 358, 360* 377; cushioning of stroke, 303, 311, 312. 332; dust allayer for, 316, 370,378; "electric-air" drill, 300,321; feed of, 295; general description, 295; hammer drills, 294, 343-379; length of stroke, 295, 296; makers of, 300, 371; modes of mounting, 296; records of work, 334-341, 372-396; repairs of, 333; rotation of bit, 295, 303, 304, 321; screw feed, 295; sizes of, (see different makes of drill); speeds of drilling, 325, 335-341, 371, 372-376; speed of stroke, 295, 350, 363, 366; spool-valve drills, 300, 304, 309, 315, 317; tappet-valve drills, 309, 311, 312, 317 Machine drills (hammer), makes of: Boyer, 371; Cleveland, 371; Climax "Im- perial," 369; Flottmann, 371; Franke, 343, 371; Her, 371; IngersoU-Rand "Crown," 358; Kimber, 343, 37^ I Leyner, 345; "Little Jap," 371; Murphy, 351; IngersoU-Rand "Imperial," 363; Schmucker, 371; Shaw Eclipse, 371; Sullivan, 354; Waugh, 366; Whitcomb, 371; Wonder, 348 Machine drills (reciprocating), makes of: Adelaide, 300; Barrow, 300; Chersen, 300, 378; Climax "Imperial," 315; Darlington, 300, 319; Doble, 300; Ferroux, 300; Froelich, 300; Himant, 300; Holman, 317; Ingersoll, 300,311; Jeffrey, 309; Konomax, 300: Kiizel, 300, 319; "Little Wonder," 300; McKieman, 300; Meyer, 300, 319; Murphy, 312; Rand, 300; Rio Tinto, 300; Rix, 300; Schram, 300; Sergeant, 300, 303; Sierra, 300; Sullivan, 304, 309; Temple- Ingcrsoll, 321; Triumph, 319; "Wahrwol*," 300; Wood, 300 Magog (Prov. Quebec), hydraulic air compressor, 236-240, 241 Mallard, M., 264 Manncsmann tubes for high air pressures, 465 Mansfeld copper mines, underground receivers, 193 McKieman Drill Co., 48; air-pressure regulator, 198; drill, 300 McLeod, C. H., 240 Mean pressures in air compression, 165, 169 Mechanical Engineers^ Assocn. of the XVitwatersrand, Trans, of^ 273, 324 Mechanically controlled air valves, 115, 117, 142-158; Allis-Chalmers, 149; American, 152; Clayton, 152; disadvantages for deliverv* valves, 143, 149; for high altitudes, 220; Franklin, 152; Laidlaw-Dunn -Gordon, 148; Nord- berg, 144, 147; N'orwalk, 144, 145; Riedler, 152-156; Rix, 152; Sullivan, 150. 151 Menck and Hambrock cataract valve, 139 Merrill pneumatic pump, 439, 440 Meyer steam valve gear, 9 Meyer, R., air-cataract valve, 139; machine drill, 300, 319 Michigan Copper Mine, drilling reconl, 336, 373 Midlothian collier^-, Va., 374 Mines and Minerals^ 20, 244, 324, 405, 479 Mining and Scientific Press, 334 Mining and Metallurgy, 328 Modern Machinery, 273 Moist air, effect of, in compression, 91, 92, 93 Moisture in air, 84, 91-93, 191. 193, 195, 274-278 Mont Ccnis tunnel, i, 2; speed of advance in, 2 Morning Mine, Mullan, Idaho, compressor plant at, 40, 42-44 Mount Hope Iron Mine, drilling record, 337 Mule haulage, cost of, 480, 483, 486 Murphy hammer drill, 351-354, 37i, 373. 375 Murphy reciprocating drill, 312, 314 Mushn>om valve, 118, 119, 124 INDEX 497 N C( n " values of, 52, 62, 84, 113, 160, 163, 164, 168, 224 Neumann and Esser piston air valves, 158 New IngersoU pick machine, 395 New Reitfontein, mine, S. A., 374 New York Air Compressor Co., 48 New York Aqueduct, explosion in compressor, 229 Nicholson, J. T., experiments by, 293 Nominal and actual cut-offs in air engines, 268-270 Non-conducting covering for air pipe, 290, 291 Nordberg compressor, 20, 48, 81, 82, 116, 144, 147, 207, 209; air-pressure regula- tor, 207, 209-215 Norris, R. v., tests on compressed-air haulage plant, 485-487 North Star Mine (Cal.), compressor at, 40-42, 44; reheating at, 291 Norwalk compressor, 2, 12, 19, 48, 99, 100, 1x6, 118, 125, 474, 475, 480, 483, 485; intercoolers, 100, 105; poppet inlet valve, 118; "skip-valve," 124; pressure regulators, 198, 199, 200; receiver, 191 Norwich (Conn.), hydraulic air compressor, 245 Ohio Society of Mech.^ Eiec.j and Steam Engineer s^ Trans, ofy 449 Oil-cataract delivery valves, 138, 139 Oils, lubricating, 225-229, 233; flash and ignition points, 225, 227; oxidation of, 62, 224, 225, 227 Operation of compressors, 32, 34: stage, 98-104, no; belt-driven, 44 Output of compressors, 17, 43, 44, 56-74, 89, 91, 108, no, 159-189, 219, 220, 240, 243» 244, 246 Paris Pneumatic Supply Co., 108, 283 Partial or incomplete expansion in air engines, 266 Peerless Colliery (W. Va.), compressed-air haulage at, 482 Pelton water-wheel, 36-39, 40, 41, 42 Pennsylvania Copper Mine, Butte, drilling records, 338 Pefloles, Compat^ia de, compressor at, 46 Performance of air compressors, 159-189, 219, 240, 244 Phila. and Reading C. and I. Pohl6, Dr. Julius, 443 Pokomy and Wittekind piston air valve, 158 Poppet valves, 115, 1 18-126; cam-controlled, 156; inertia of, 117, 118; sticking of, 123 498 INDEX Port area for air cylinders, 116-118, 127, 133 Porter, H. K., Co., compressed-air locomotives, 457, 458-460, 463, 464-466, 479, 482, 484, 485 Portland Mine, Cripple Creek, drilling record, 341, 372 Preheating for compressed-air pumps, 434, 436 Prcscott steam pump, 425 Pressure of air as influencing freezing, 276, 277 Pressure regulators, 196-215 Prevention of freezing of moisture, 275, 276, 433, 436 Proportions of compressor cylinders, 35, 36 Protection from freezing of surface air piping, 278 Pulsator for "Electric-air" drill, 321, 322 Pumping by direct action of compressed air, 438-455 Piunps, direct-acting, 423-427; compound pumps operated by air, 434-437; cylinder dimensions, 428; duty of, 429, 430; terminal and mean air pressures, 430; volume of air consumed, 428-431 Pumps operated by direct action of compressed air, 277, 423-427; air-lift pumps, 443-453; pneumatic displacement pumps, 438-443 Radialaxe coal cutter, 400-402 Railway and Engineering Review ^ 236 Rand compressor, 2, 3, 85, 115, 202; reheater, 288 Rand drill, 3, 300, 336, 338, 339 Rand mechanical air valve gear, 115 Randall, B. M., experiments by, 447 Randolph, B. S., 488 Rating of compressors, 159, 160 Rawhide pinions for geared compressors, 46 Receiver aftercoolers, no, 192, 195 Receivers, air, 190-195; baffle-plates for, 107, 195; functions of, 190-192; sizes of, 190; underground receivers, 193, 277, 432 Reciprocating coal cutters, 380, 388-405 Reciprocating drills, 300 et seq. Records of work, machine drills, 334 et seq.y 372 c/ seq. Reducing valves for compressed-air pump, 432 Reduction of pressure as influencing deposition of moisture, 277 Re-expansion line of air card, 67, 70, 72, 167 Regulation of compressors, 18, 20, 32, 34, 196 et seq. Regulators, air-pressure, 196-215 Reheaters for compressed air, 279-293; for channelers, 411, 417 Reheating compressed air, 279-293, 434-437, 46S Repairs of machine drills, 333 Resistance due to bends in air piping, 260 "Return air" system of transmission, 272, 273, 437, 442 Richards, Frank, 99, 102, 134, 195, 255, 256, 272, 280, 291, 427 Riedler compressor, 12, 16, 27, 28, 139; "express" discharge valve, 139, 140; mechanically controlled valves, 152-156 Riedler, experiments by, 284 Riedler steam pump, 425 Rifle-bar for machine drills, 295, 303, 304, 305, 321 Rigg and Meiklejohn coal cutter, 388 Risdon water-driven compressor, 36, 39 Rix Compressor and Drill Co., 48 Rix Compressor, North Star Mine, 40; compressed-air locomotive, 480; drill, 300 Rix, E. A., on compressed-air pumps, 431, 433, 435, 436, 447 Rock-drills (see Machine drills) Rockford, 111., tests on air-lift pump, 447 INDEX 49g II Rock Terrier" hammer drill, 348 Rose, A. H., 244 Rose Deep Mine, South Africa, experiments on rock-drills at, 329-330 Rotation devices for machine drills, 295, 303, 304, 305, 321 Rotarj'-bar coal cutter, 380, 385 Rubber ring inlet valve, 130 Ruhrthaler Maschinenfabrik, 319 Rutland marble quarries, 418 , San Pedro Copper Mine, drilling records, 335 Saunders, W. L., 54, 91, 94, 141, 227, 293 Schneider & Co., Creusot, 115 Schram intercooler, 108 Schram drill, 300 Schuechtermann and Kremer oil-cataract valve, 139 Schuetz, G. A., Wurzen, air-cataract valve, 139 Schmucker hammer drill, 371 Schwarz and Co., 319 Sergeant reheater, 286, 287 Sergeant coal pick, 389 Sergeant drill, 300, 301, 304, 329, 338 Seymour, L. I., ex|)eriments on rock-drills, 329 Shaw Eclipse hammer drill, 371 Shaw Pneumatic Tool Co., 371 Shetucket River, Conn., hydraulic air compressor, 245 Sibley Journal of Engineerings 287 Sierra drill, 300 Simpkins, £., 388 Single-stage compression, work of, 56-70, 160, 161, 163 "Skip-valve" for Norwalk high-pressure air cylinder, 123, 124 Slimes and sands pumped by air-lift, 450-453 Snow Storm Mine, Idaho, drilling records, 336, 373 Soap and water for cleaning air cylinders, 233 Sommeiller, i; compressor, 2 South African Association of Engineers ^ Trans, of^ 329 South Crofty Mine, Cornwall, drilling record, 374 Specific heat of air: at constant pressure and volume, 55, i68 Speer, F. W., 244 Sperry coal cutter, 385 Spiral-weld steel air pipe, 259 Spool-valve drills, 300, 304, 309, 315, 317 Spool versus tappet valves for machine drills, 332 Sprague, T. Stage compressors, 12, 16, 19, 20-33, 95-114; double-acting, 99; for high altitudes, 221; ratio of cylinder volumes, 104; single-acting, 98; work of, 163, 164 Stanley heading machine, 405-407 Steam and air card combined, 35 Steam-driven, direct-acting pumps, 423-425; cylinder dimensioife of, 427, 428 Stephens and Son, Cam Brea, 315 Storage-battery electric locomotives, 457 Straight-line compressors, q, 12, 13, 17, 18-22 Stroke, length of, for compressors, 35 Sturgeon air inlet valve, 116, 135, 157 Submergence of air-lift pumps, 444-447, 449, 452 Suction valves (see Inlet valves) 500 INDEX Sullivan channeler, 410, 411, 413, 414, 417, 420 Sullivan coal pick, 381, 391, 399 Sullivan compressor, 12, 22, 23, 48, 105, 106, 150, 204, 475; intercooler, 105; reheater, 287-289; valve motions, 150, 151 Sullivan drill, 304-308, 337, 338, 339 Sullivan hammer drill, 344, 354-358 Sullivan Machinery Co., 48, 385, 417, 475 Summers, L. L., experiments by, 328 Surface air piping, protection of, 278 Susquehanna Coal Co., No. 6 Colliery, compressed-air haulage at, 485-487 Sutro tunnel, Nevada, compressor at, 75 Tailings pumps and wheels replaced by air-lift pumps, 450-453 Tanks, capacity of, for compressed-air locomotives, 459, 460, 463, 469 et seg. Tappet drills, 307, 308, 309, 311, 312, 317 Tappet versus spool valves for machine drills, 332 Taylor, Chas. H., 236; hydraulic air compressor, 236 el seq.^ 292 Technical Society oj the Pacific Coast ^ Proceedings ofy 431, 441, 447 Temperatures employed in reheating, 281-285, 291, 293 Temperatures of compression, 44, 53, 54, 76, 78, 79, 84, 95, 166, 225, 227, 230, 231, 282 Temperatures of expansion, 264, 269 Temperatures, rate of increase of, in compression, 53 Temple-Ingersoll "electric-air" drill, 300, 321, 400, 418, 420 Tennessee Copper Co., compressor of, 20, 170 Tests on compressors, 169-189, 240, 244 Tests on machine drills, 324-326, 329, 377, 378 (foot-note) Theoretical horse-power required to compress air, 56 et seq.y 160, 161 Thermal cost of reheating, 280-284 Thermodynamic laws, $6 et seq. Thomson-Houston solenoid pick machine, 389 Three-stage compression, work of, 163, 164 Three-stage compressors, 96, 474, 476, 480, 483, 485, 488 Track resistance of mine cars, 472, 473 Transmission losses, comparison of air and steam, 4; in pipes, 248-257 Transmission of power by compressed air, 248-260 Transvaal Inst. Mech. Engs.y 378 Triumph drill, 300, 319-321 Two-pipe system of compressed-air transmission, 272, 273 Two-stage compression, work of, 70 et seq.^ 163, 164 Tunneling, i, 2, 5, 336, 375 Turbine wheel for driving compressors, 36 Undercutting machines for coal, 380 et scq. Underground air receivers, 193, 277, 432 Underground reh eaters, 290 Unloaders for air cylinders, 199-208; Franklin, 206; Ingersoll-Sergeant, 206-207; Laidlaw-Dunn-Gonlon, 20S; Norwalk, 199; Rand, 202, 203; Sullivan, 204, 205 Unwin, W. C, 256, 284 Valve, adjustable cut-off, for steam, 34 Valveless drills, 319-321, 344, 348-354, 35«'^-36i INDEX 501 Valves, air-inlet, 115-135; area of, 117, 118, 127; of Bailey & Co., 158; chat- tering of, 119, 120; clack, 115, 131; Coriiss, 116, 142-151; of Dover Iron Co., 158; Guttermuth, 131; Humboldt rubber-ring, 130; inertia of, 117- 119; I ngersoU-Rand *' hurricane " inlet, 126-128; Johnson, 129; Koster piston valve, 158; Laidlaw-Dunn-Gordon, 118, 119; Lens cam-controlled, 156; Leynerflat annular, 131-133; mechanically controlled, 115, 116, 117, 142- 158, 220; Neumann and Esser, 158; Nordberg, 82, 116, 213; Norwalk, 118; Pokomy and Wittekind, 158; requisites of, 116; resistance of, 117, 120- 123, 220; Riedler double seat poppet, 152-156; Schuechtermann and Kremer, 139; Schuetz, 139; skip- valve, 124, 126; springs for, 117-121; sticking of, 123; Sturgeon, 157 Valves, air-delivery, 136-141; air-cataract, 139; AUis-Chalmers, 149; area of , 140, 141; Corliss, 139, 143-146; Laidlaw-Dunn-Gordon "Cincinnati" valve gear, 148; poppet, 147-151; Nordberg, 144, 146; Norwalk, 144, 145; oil- cataract, 138; Riedler " express," 139, 140; double-seat poppet, 152-156 Valves of machine drills, 300 ei seq.; 332, 334 et seq. Van Nostrand's Science Series No. 106, Unwin, 256 Vauclain compound compressed-air locomotives, 484 Vekol Gold Mine, Arizona, drilling record, 339 Velocity of flow of air in pipes, 232, 256, 257 Victoria Copper Mine, Michigan, hydraulic air compressor at, 242-245 Village Deep Mine, S. A., 374 Volume of air for non-expansive working pumps, 428-431 Volumes and pressures of compressed air, 159, 160, 165; at altitudes above sea-level, 216-220; influence of reheating on, 280-285, ^9^ Vulcan Iron Works, 48 W Wabana Iron Mines, N. S., drilling record, 338 "Wahrwolf" drill, 300 Wain^Tight water heater employed as reheater, 436 Wandsworth (England) test on air-lift pump, 449 Water-driven compressors, 36 et seq.; at Goleta Mine, 36; at Morning Mine, 40, 42-44; at North Star Mine, 40, 42, 43 "Water" Leyner drill, 344, 345i 348 Water-wheels for driving compressors: Knight, 36; Pelton, 36, 40-42; peripheral velocity of, 36; Risdon, 36, 37 Waugh hammer drill, 366-369, 373, 374, 375 Webb, R. L., 174 Weber, F. C, 270 Weight and volume of dry air, 50 Wet compressors, 62, 63, 75-^0, 90-94 "Wet" reheating, 292, 2;3 Weymouth, C. R., 293 Whitcomb hammer drill, 371 Wilson Colliery, Pa., compressed-air haulage at, 483 Wilson tests on air-lift pumps, 450-453 Winstanley coal cutter, 388 Wolverine Copper Mine, Mich., drilling record, 340 Wonder hammer drill, 348, 374 Woodbridge, I). E., 244 Work done by air engines, 265-270 Work done by air-lift pumps, 448-450, 452 Work gained by reheating, 281-284 Work required to compress air, 56 et seq.; 92, no, 159 et seq.; in stage compres- sion, 163, 164 Worthington compound pump at Gwin Mine, 436 Worthington, Henr>' R., 423 502 INDEX Yakima, North, Wash., tunnels, drilling record, 336 Yoch pick machine, 389 Yorkshire coal cutter, 388 Zahncr, "Transmission of Power by Compressed Air," 53, 78, 70, 264 Zeitschrip fiir das Berg-, HuUen-, und Salinen-Wesen, 193 Short- TITLE Catalogue OF THE PUBLICATIONS OP JOHN WILEY & SONS New York London: CHAPMAN & HALL, Limited ARRANGED UNDER SUBJECTS Descriptive circulars sent on application. Books marked with an asterisk (*) are lold at n4t prices only. All books are bound in cloth unless otherwise stated. AGRICULTURE— HORTICULTURE— FORESTRY. Armsby's Principles of Animal Nutrition 8vo. $4 00 Budd and Hansen's American Horticultural Manual: Part I. Propagation, Culture, and Improvement 12mo, 1 50 Part II. Systematic Pomology 12mo. 1 50 Elliott's Engineering for Land Drainage 12mo, 1 50 Practical Farm Drainage. (Second Edition, Rewritten.) 12mo, 1 50 Graves's Forest Mensuration 8vo, 4 00 Principles of Handling Woodlands. (In Press.) Green's Principles of American Forestry 12mo, 1 50 Grotenfelt's Principles of Modem Dairy Practice. (Woll.) 12mo, 2 00 * Herrick's Denatured or Industrial Alcohol 8vo. 4 00 Kemp and Waugh's Landscape Gardening. (New Edition, Rewritten. In Press.) * McKay and Larsen's Principles and Practice of Butter-making 8vo, 1 50 Maynard's Landscape Gardening as Applied to Home Decoration 12mo, 1 50 Sanderson's Insects Injurious to Staple Crops 12mo, 1 50 Sanderson and Headlee's Insects Injurious to Garden Crops. (In Prepa- ration.) * Schwarz's Longleaf Pine in Virgin Forest 12mo. 1 25 Solotaroflf' s Shade Trees in Towns and Cities. (In Press.) Stockbridge's Rocks and Soils 8vo, 2 50 Winton's Microscopy of Vegetable Poods 8vo. 7 50 Woll's Handbook for Farmers and Dairymen Idmo, 1 50 ARCHITECTURE. Baldwin's Steam Heating for Buildings 12mo, 2 50 Berg's Buildings and Structures of American Railroads 4to, 5 00 Birkmire's Architectural Iron and Steel 8vo, 3 50 Compound Riveted Girders as Applied in Buildings 8vo, 2 00 Planning and Construction of American Theatres 8vo, 3 00 1 Birkmire's Planning and Construction of Hi^ Office Buildings 8vo, Skeleton Construction in Buildings 8vo. Briggs's Modem American School Buildings 8vo. Byrne's Inspection of Materials and Wormanship Employed in Construction. Idmo, Carpenter's Heating and Ventilating of Buildings 8vo. * Corthell's Allowable Pressure on Deep Foundations 12mo, Pteitag's Architectural Engineering 8vo, Pireproofing of Steel Buildings 8vo, Gerhard's Guide to Sanitary Inspections. (Poxuth Edition, Entirely Re- vised and Enlarged.) 12mo, * Modem Baths and Bath Houses 8vo, Sanitation of Public Buildings 12mo, Theatre Pires and Panics -. 12mo, * The Water Supply, Sewerage and Plumbing of Modem City Buildings. 8vo. Johnson's Statics by Algebraic and Graphic Methods 8vo, Kellaway's How to Lay Out Suburban Home Grounds 8vo, Kidder's Architects' and Builders' Pocket-book 16mo, mor., Merrill's Stones for Building and Decoration 8vo, Monckton's Stair-building 4to. Pattbn's Practical Treatise on Foundations 8vo, Peabody's Naval Architecture 8vc, Rice's Concrete-block Manufacture 8vo, Richey's Handbook for Superintendents of Construction 16mo, mor. Building Foreman's Pocket Book and Ready Reference. . 16mo, mor. * Building Mechanics' Ready Reference Series: * Carpenters' and Woodworkers' Edition 16mo, mor. * Cement Workers' and Plasterers' Edition 16mo, mor. * Plumbers', Steam-Fitters', and Tinners' Edition. . .16mo, mor. * Stone- and Brick-masons' Edition 16mo. mor. Sabin's House Painting 12mo, Siebert and Biggin's Modem Stone-cutting and Masonry 8vo, Snow's Principal Species of Wood 8vo, Wait's Engineering and Architectural Jurisprudence 8vo, Sheep, Law of Contracts 8vo, Law of Operations Preliminary to Construction in Engineering and Architecture 8vo, Sheep, Wilson's Air Conditioning 12mo, Worcester and Atkinson's Small Hospitals, Establishment and Maintenance, Suggestions for Hospital Architecttire, with Plans for a Small Hospital 12mo. 1 26 $3 50 3 00 4 00 3 00 4 00 1 25 3 50 2 50 1 50 3 00 1 50 1 50 4 00 2 00 2 00 5 00 5 00 4 00 5 00  60 3 00 5 00 5 60 I 60 ARMY AND NAVY. Bemadou's Smokeless Powder, Nitro-cellulose, and the Theory of the Cellu- lose Molecule 12mo. 2 60 Chase's Art of Pattem Making 12mo, 2 60 Screw Propellers and Marine Propulsion 8>'o, 3 00 * Cloke's Enlisted Specialists' Examiner 8vo. 2 00 * Gunner's Examiner 8vo, 1 50 Craig's Azimuth 4to, 3 50 Crehore and Squier's Polarizing Photo-chronograph 8vo. 3 00 * Davis's Elements of Law 8vo, 2 50 * Treatise on the Military Law of United States 8vo, 7 00 * Dudley's Military Law and the Procedure of Courts-martial. ..Large 12mo, 2 60 Durand's Resistance and Propulsion of Ships 8vo. 5 00 * Dyer's Handbook of Light Artillery 12mo, 3 00 Eissler's Modem High Explosives 8vo, 4 00 * Fiebeger's Text-book on Field Fortification Large I2mo, 2 00 Hamilton and Bond's The Gunner's Catechism 18mo, 1 00 2 $1 50 4 00 6 00 1 00 6 00 7 50 1 50 2 00 4 00 1 00 7 50 2 50 2 00 5 00 50 1 50 7 50 50 8 00 1 50 * Hoff's Elementary Naval Tactics 8vo, Ingalls's Handbook of Problems iii Direct Fire 8vo, * Lissak's Ordnance and Gunnery 8vo, * Ludlow's Logarithmic and Trigonometric Tables 8vo. * Lyons's Treatise on Electromagnetic Phenomena. Vols. I. and IL.Svo.each. * Mahan's Permanent Fortifications. (Mercur.) 8vo, half mor. Manual for Courts-martial Idmo.mor. * Mercar's Attack of Fortified Places 12mo, * Elements of the Art of War 8vo, Nixon's Adjutants' Manual 24mo, Peabody's Naval Architecture 8vo, * Phelps's Practical Marine Surveying 8vo. Putnam's Nautical Charts 8vo, Rust's Ex-meridian Altitude. Azimuth and Star-Finding Tables 8vOj ^ Selkirk's Catechism of Mantial of Guard Duty 24mo. Sharpe's Art of Subsisting Armies in War 18mo, mor. ^Taylor's Speed and Power of Ships. 2 vols. Text 8vo, plates oblong 4to. * Tupes and Poole's Manual of Bayonet Exercises and Musketry Fencing. 24mo. leather, * Weaver's Military ^^xplosives .■ 8vo. * WoodhuH's Military Hygiene for Officers of the Line Large 12mo. ASSAYING. Betts's Lead Refinmg by Electrolysis. 8vo. 4 00 ^Butler's Handbook of Blowpipe Analysis 16mo, 75 Fletcher's Practical Instructions in Quantitative Assaying with the Blowpipe. 16mo, mor. 1 50 Furman and Pardoe's Manual of Practical Assaying 8vo, 3 00 Lodge's Notes on Assaying and Metallurgical Laboratory Experiments. .8vo. 3 00 Low's Technical Methods of Ore Analysis 8vo, 3 00 Miller's Cyanide Process 12mo, 1 00 Mantial of Assaying 12mo, 1 00 Minet's Production of Aluminum and its Indtutrial Use. ( Waldo. )...12mo, 2 50 Rickettsand Miller's Notes on Assaymg ..8vo. 3 00 Robine and Lenglen's Cyanide Industry. (Le Clerc.) 8vo, 4 00 * Seamon's Manual for Assayers and Chemists Large 12mo. 2 50 Ulke's Modem Electrolytic Copper Refining 8vo, 3 00 Wilson's Chlorination Process 12mo. 1 50 Cyanide Processes ...•• 12mo, 1 50 ASTRONOMY. Comstock's Field Astronomy for Ena^neers 8vo, 2 50 Craig's Azimuth 4to. 3 60 Crandall's Text-book on Geodesy and Least Squares 8vo. 3 00 Doolittle's Treatise on Practical Astronomy 8vo. 4 00 Hayford's Text-book of Geodetic Astronomy 8vo. 3 QO Hosmer's Azimuth 16mo. mot. 1 00 * Text-book on Practical Astronomy 8vo, 2 00 Merriman's Elements of Precise Surveying and Geodesy. 8vo, 2 50 * Michie and Harlow's Practical Astronomy 8vo, 3 00 Rust's Bx-meridiao Altitude, Azimuth and Star-Finding Tables 8vo, 5 00 * White's Elements of Theoretical and Descriptive Astronomy 12mo. 2 00 CHEMISTRY. * Abderhalden's Physiological Chemistry in Thirty Lectures. (Hall and Defren.) 8vo. 5 00 * Abegg's Theory of Electrolytic Dissociation, (von Ende.) 12mo, 1 25 Alexeyeff's General Principles of Organic Syntheses. (Matthews.) 8vo, 3 00 Allen's Tables for Iron Analysis 8vo. 3 00 Armsby's Principles of Animal Nutrition .8vo. 4 00 3 Arnold's Compendium of Chemistry. (Mandel.) Large 12mo. $3 50 Association of State and National Pood and Dairy Departments, Hartford Meeting. 1906 8vo, 3 00 Jamestown Meeting, 1907 8vo, 3 00 Austen's Notes for Chemical Students 12mo, 1 50 Baskerville's Chemical Elements. (In Preparation.) Bemapdou's Smokeless Powder. — Nitro-cellulose, and Theory of the Cellulose Molecule 12mo. 2 50 * Biltz's Introduction to Inorganic Chemistry. (Hall and Phelan.). . . 12mo. 1 25 Laboratory Methods of Inorganic Chemistry* (Hall and Blanchard.) 8vo, 3 00 * Bianchard's Synthetic Inorganic Chemistry 12mo. 1 00 * Browning's Introduction to the Rarer Elements 8vo, 1 50 * Butler's Handbook of Blowpipe Analysis Idmo, 75 * Claassen's Beet-sugar Manufacture. (Hall and Rolfe.) 8vo, 3 (X) Classen's Quantitative Chemical Analysis by Electrolysis. (Boltwood.).8vo, 3 (X) Cohn's Indicators and Test-papers 12mo. 2 00 Tests and Reagents 8vo. 3 00 * Danneel's Electrochemistry. (Meniam.) 12mo, 1 25 Dannerth's Methods of Textile Chemistry , 12mo, 2 00 Duhem's Thermodynamics and Chemistry. (Burgess.) 8vo, 4 00 Eflront's Enzymes and their Applications. (Prescott.) 8vo, 3 00 Eissler's Modem High Explosives 8vo. 4 00 * Fischer's Oedema 8vo. 2 00 * Physiology of Alimentation Large 12mo, 2 00 Fletcher's Practical Instructions in Quantitative Assaying with the Blowpipe. 16mo. mor. 1 50 Fowler's Sewage Works Analyses 12mo, 2 00 Fresenius's Manual of Qualitative Chemical Analysis. (Wells.) 8vo. 5 00 Manual of QuaKtative Ctevncal Analysis. Part I. Descriptive. (Wells. )8vo. 3 00 Quantitative Chemical Analysis. ((John.) 2 vols 8vc, 12 50 When Sold Separately, Vol. I, $6. Vol. II. $8. Puertes's Water and Pubiic Health 12mo. 1 50 Furman and Pardee's Manual of Practical Assaying 8vo, 3 00 * Getman's Exercises in Physical Chemistry 12mo, 2 00 Gill's Gas and Fuel Analysis for Engineers 12mo, 1 25 * Gooch and Browning's (Outlines of Qtuilitative Chemical Analysis. Large 12mo, 1 25 Grotenfelt's Principles of Modem Dairy Practice. (Woll.) 12mo, 2 00 Groth's Introduction to Chemical Crystallography (Marshall) 12mo. 1 25 HamntMmten's Text-book of Physiological Chemistry. (Mandel.) 8vo, 4 00 Hanausek's Microscopy of Technical Products. (Win ton. ) 8vo, 5 00 * Haskins and Macleod's Organic Chemistry 12mo, 2 00 * Herrick's Denatured or Industrial Alcohol 8vo, 4 00 Hinds's Inorganic Chemistry 8vo, 3 00 * Laboratory Manual for Students 12mo, 1 00 * Holleman's Laboratory Manual of Organic Chemistry for Beginners. (Walker.) 12mo. 1 00 Text-book of Inorganic Chemistry. (Cooper.) 8vo, 2 50 Text-book of Organic Chemistry. (Walker and Mott.) 8vo, 2 50 * HoUey's Lead and Zinc Pigments. Large 12mo. 3 00 Holley and Ladd's Analysis of Mixed Paints, O>lor Pigments, and Varnishes. Large 12mo. 2 50 Hopkins's Oil-chemists' Handbook 8vo, 3 00 Jackson's Directions for Laboratory Work in Physiological Chemistry. .8vo, 1 25 Johnson's Rapid Methods for the Chemical Analysis of Special Steels, Steel- makintf- Alloys and Graphite Large 12mo, 3 00 Landauer's Spectrum Analysis. (Tingle.) 8vo, 3 00 Lassar-C^hn's AppKcation of Some General Reactions to Investigations in Organic Chemistry. (Tingle.) 12mo. 1 00 Leach's Inspection and Analysis of Pood with Special Reference to State Control 8vo, 7 50 Ldb's Electrochemistry of Organic Compounds. (Lorenz.) 8vo. 3 00 Lodge's Notes on Assaying and Metallurgical Laboratory Experiments.. 8vo, 3 00 l«ow's Technical Method of Ore Analysis 8vo, 3 00 Lowe's Paint for Steel Structures 12mo, 1 00 Lunge's Techno-chemical Analysis. (C^hn.) 12mo, 1 00 * McKay and Lanen's Principles and Practice of Butter-making 8vo, Maire's Modem Pigments and their Vehicles 12mo, Mandel's Handbook for Bio-chemical Laboratory 12mo, * Martin's Laboratory Guide to Qualitative Analysis with the Blowpipe 12mo. Mason's Examination of Water. (Chemical and Bacteriological.) 12mo. Water-supply. (Considered Principally from a Sanitary Standpoint.) 8vo. * Mathewson's First Principles of Chemical Theory 8vo, Matthews's Laboratory Manual of Dyeing and Textile Chemistry 8vo, Textile Fibres. 2d Edition. Rewritten 8vo, * Meyer's Determination of Radicles in Carbon (Compounds. (Tingle.) Third Edition 12mo, Miller's Cyanide Process 12mo, Manual of Assaying — 12mo, Minet's Production of Aluminum and its Industrial Use. ( Waldo. )...12mo, * Mittelstaedt's Technical Calculations for Sugar Works. (Bourbakis.) 12mo, Mixter's Elementary Text-book of Chemistry 12mo, Morgan's Elements of Physical Chemistry 12mo, Outline of the Theory of Solutions and its Results 12mo. * Physical Chemistry for Electrical Engineers 12mo, * Moore's Outlines of Organic Chemistry 12mo, Morse's Calculations used in Cane-sugar Factories 16mo„ mor. * Muir's History of Chemical Theories and Laws 8vo, Mulliken's General Method for the Identification of Pure Organic (impounds. Vol. I. (Compounds of Carbon with Hydrogen and Oxygen. Large 8vo, Vol. II. Nitrogenous Compounds. (In Preparation.) Vol. III. The Cx>mmercial Dyestuffs Large 8vo, * Nelson's Analysis of Drugs and Medicines 12mo, Ostwald's (Conversations on Chemistry. Part One. (Ramsey.) 12mo. Part Two. (Tumbull.) 12mo. Introduction to Chemistry. (Hall and Williams.) (In Press.) Owen and Standage's Dyeing and Cleaning of Textile Fabrics 12mo, * Palmer's Practical Test Book of Chemistry 12mo, * Pauli's Physical Chemistry in the Service of Medicine. (Fischer.) . . 12mo, Penfield's Tables of Minerals. Including the Use of Minerals and Statistics of Domestic Production 8vo. Pictet's Alkaloids and their Chemical Constitution. (Biddle.) 8vo, Poole's Calorific Power of Fuels 8vo, Prescott and Winslow's Elements of Water Bacteriology, with Special Refer- ence to Sanitary Water Analysis 12mo. * Retsig's Guide to Piece- Dyeing. 8vo, Richards and Woodman's Air, Water, and Food from a Sanitary Stand- point 8vo. Ricketts and Miller's Notes on Assaying 8vo, Rideal's Disinfection and the Preservation of Food 8vo, Sewage and the Bacterial Purification of Sewage 8vo, Riggs's Elementary Manual for the Chemical Laboratory 8vo. Robine and Lenglen's C3ranide Industry. (Le Clerc.) 8>^o, Ruddiman's Incompatibilities in Prescriptions 8vo, Whys in Pharmacy 12mo, * Ruer's Elements of Metallography. (Mathewson.) 8vo. Sabin's Industrial and Artistic Technology of Paint and Varnish 8vo, SaUcowski's Physiological and Pathological Chemistry. (Omdorff .) 8vo. Schimpf 's Essentials of Volumetric Analysis 12mo, Manual of Volumetric Analysis. (Fifth Edition, Rewritten) 8vo, * Qualitative Chemical Analysis 8vo, * Seamon's Manual for Assayers and Chemists Large 12mo Smith's Lecture Notes on Chemistry for Dental Students 8vo, Spencer's Handbook for Cane Sugar Manufacturers. 16mo, mor. Handbook for Chemists of Beet-sugar Houses 16mo. mor. 