None
* BritiHh Medioil JoDraal, Har. &, 1910, p. 679. • The LaneeU Juir 3. 1902. INDEX. Abdominal bands, military, 718 Abrin, from jequirity bean, a true toxin or immunizing poison, 781, 783 Abscess, filarial, 837 Absinthe, 261 Acetic acid, 24, 263 in smoke, 273 Acetylene gas in iUimiination, 534 Acidity of peers, 249 of fruits, 215 of vinegar, 265 of wines, 254 Acids. See Special acids. Acquired immunity, 779^ 781 Act, August 14. 1912, Interstate Public Health Service, 846 of Congress, February 15, 1893, Quarantine, 842 March 27, 1890, Interstate Quaran- tine Law, 846 March 3, 1891, Meat Inspection, 90 Actinomycosis, 46 milk from cows affected with, 133 Active immimity, 779, 781 Adenoids, 685 Administrative control of communicable diseases^ 851 Adulteration. See Special articles. iEstivo-autumnal malarial fever, 825 After-lifetime, mean, 902 Ag, thermostability of, 794 Age at death, mean, 901 in vital statistics, 888 Agglutinins, immune bodies, second order, 793, 796 Agglutinoids, 795 Air;289 as carrier of infections, 311 of tuberculosis, 858 constituents of, 289 cont^ned in soil, 350 examination of, 381 in water, 390 disinfection of, 625 dust in, 298 effects of combustion upon, 292, 301, 535 examination of, 318 bacteriological, 335 filtration of^ 527 microorganisms in, 298 moisture in, 296, 675 required, 525, 676 58 Air, organic matters in, 307 permeability of building materials to, 512 of soils to, 341 determination of ,377 poisonous, contamination in, 301 space required for ventilation, 509 in treatment of tuberculosis, 697 vitiation of, 292, 301 effects of, 307 Albuminoid ammonia in water, 393 determination of, 459 inferences from, 473 Albuminoids, 20 Albumins, 20 contained in milk, 99 precipitation of, 22 Albumoses, 22 Alcohol contained in beer, 234, 238 determination of, 239 in wines, determination of, 252, 254 as disinfectant, 604 ethyl, 247 methyl, 247 determination of, in beer, 245 use of, in army rations, 728 in tropics, 772 Alcoholic beverages, distilled, 257 fermented, 234 toxicity ot, 262 Ale, 234 Alexins, 786, 787 Algae in water, 389 destruction of, 424 Alkali trades, 666 Alkaline potassium permanganate, 457 soils, 339 waters, 396 Alkalinity of body fluids, maintenance of, by organic acids in nutrition, 24 Alkaloidal beverages, 224 poisons in honey, 222 nature of tolerance established by, 782 Allspice, 270 Almonds, 206 Alum powders, 271 in purification of water, 413 Aluminum chloride as disinfectant, 594 kitchenware, 288 in soil, 339 in water, 396 Amboceptors, immune bodies acquired in third order reactions, 788, 797 913 914 INDEX. American cheese, 187 Ammonia contained in air, 295 in water, 392 detennination of, 459 inferences from, 473 in industries. 666 use of, in refrigeration, 273 Ammoniarfree water, 458 Amcebula^ malarial, 824 Amylase m milk, 109 Amemiaj miners', 371, 672 Aniline mdustry, 668 Anilin-orange, detection of, in milk, 170 Animal foods, 24 Ankylostomum uncinariasis, soil and, 371 in imdergroimd work, 672 water and, 454 Annatto in colorini^ butter, 176 in milk, detection of, 168 Anopheles, filaria and, 838 malana and, 821 parasites and, 825 Anterior poliomyelitis, administrative control of, 874 Anthrax in animals, 45 milk from cows affected with, 133 soil and, 370 transmission of, in trades, 672 water and, 435 Antibodies specific to antibodies, 790 Anticomplement, 790, 792, 793 Antihsemolysin, 790 Anti-immime bodies, 790, 793 Antileucolysin, 790 Antiscorbutic ration, 762 Antiscorbutics in nutrition, 24 Antiseptics, 572 Antispermolysin, 790 Antistreptococcus serum, 810 Antitoxic serums, 785 Antitoxins, 781, 783, 796 Apples, 215 malic acid in, 24 Apricots, 216 Aqueous vapor in air, 296 determination of, 319 Arable soil, 337 Argand burners, 532 Argon in air, 292 Aimy medical service, 703 Arrowroot, 206 Arsenical poison from beer, 237 trades, dusts, 661 fumes and gas, 670 Arseniuretted hydrogen poisoning, 670 Artesian wells, 405 Artichokes, 213 Artificial cream, 129 flowers, 661 ice, 456 Artillery, 707 Asbestos method of determination of fat, 158 Ascaris, flies and, 818 water and, 453 Ascites, chylous, filarial, 837 Asexualized animals, meat of, 26 Asiatic cholera, administrative control of, 868 air as carrier of, 317 flies as carriers of, 816 inmiunization in, 807 milk contaminated with, 144 oysters and, 64 soil and, 367 in tropics, 776 water and, 448 Aspara^ps, 214 Aspiratmg cowl, 514 Aspiration in ventilation, 513 Asteriondla in water, 389 Atmosphere. See Air. Atmospheric pressure, disorders from, 673 Autan as dismfectant, 618 , Autoclave, formaldehyde, 613 B Baboock centrifugal method of determi- nation of fat, 157 Bacillary dyswitery. See Dysentery. Bacillol as disinfectant, 603 Bacteria in air, 298 in ice. 455 in milk, 110 count of, 112 sources of, 115 in soil, 361 in water, 397 Bacterial digestion of sludge and sewage, 489 Bacteriological examination of air, 335 ofsoil, 383 of water, 475 usefulness of, relative to diemistry. 480 Bacteriolysins (receptors tnird order), 796 Bacteriolysis, 785 Bakers' chemicals, 270 Baking powders, 270 use of, 194 Bananas, 218 Barium hydrate solution, 324 Barley, 199 malt, 235 Barracks, army, 738 Baseball as exercise, 639 Bath water, disinfecting solution for, 744 temperatures for, 632 Bathing, 631 Bathtubs, 566 Batteries, manufacture of, 664 Beans, 204 su^ in, 23 Bed. disinfection of, 744 Bedbugs, disease and, 819 Bedding, disinfection of, 624, 628 Bed-linen, disinfection of, 744 Bedpan, disinfection of, 581 Beef, characteristics of good, 27 composition of, by cuts, 29 cysticercus in, 40 INDEX, 915 Beef, poisoning by, 72 cases of, 85 Beer, 234 adulteration of, 238 anal3rsis of, 239 bock, 238 composition of, 238 poisoning from, arsenical, 237 preservatives in, 239 detection of, 249 Beet, sugar in, 23 tops, 214 Beet-sugar, 219 Beets, 213 Benzoates in preservation of food, 283 Benzoic acid in preservation of food, 283 Berkefeld filters, 419 Berries, 218 Beverages, 224 alcoholic, toxicity of, 262 Bicarbonate of sodium, 271 in rising of bread, 194 Bicarbonates in preservation of food, 284 Bichloride of mercury as disinfectant, 595 solution, 743 Bicycling as exercise, 639 BiUiarzia hsematobia, water and, 454 Biological agencies affecting soils, 349 Biometer, 903 Birth-rates, 886 Bisulphites in preservation of food, 281 in purification of water, 416 Bitartrate. potassium, in leavening, 271 Blackberries, 218 Blackboards, school, 507 Blackleg, 46 Blankets, disinfection of, 744 waterproof, 719 Bleaching of flour, 198 powder as disinfectant, 587 industries, 666 Blood, iron in nutrition of, 24 organic acids in maintenance of alkalinity of, 24 Blood-corpuscle parasites, 824 Bock beer, 238 Body heat, maintenance of, by carbohy- drates, 23 by fats, 22 measurements, 707 weight, effect of exercise upon, 636 Boiling, effects of, on meat, 26 in purification of water, 417 water as disinfectant, 580 Bone, phosphates in nutrition of, 24 Books, disinfection of, 629 Boots, military, 717 Bored wells, 403 Boric acid in preservation of food, 277 of milk, 123 detection of, 170 Botulism. Caproin, 22 in butter-fat, 177 Caprylin, 22 in butter-fat, 177 Caramel, 219 detection of, in milk, 169 Carbohydrates, 22 Carbolic acid as disinfectant, 599 soap. 610 Carbon aioxide in air, 292 determination of ^ 324 in soil air, determination of, 381 in water, 391 disulphide in trades, 667 monoxide in air, 301 determination of, 332 in trades, 667 Carbonate of sodium as disinfectant, 591 in preservation of milk, 125 Carbonates m soil, 339 in water, 396 Carlsbad water, 396 Carnivorous animals, meat of, as food, 24 Carpentering trades, 660 CarrotSj 713 Casein m milk, 99 precipitation of, 22 Caseous lymphademtis, 46 Cassia, 268 Castor bean, true immuniging toxins from, 783 Castrated animals, meat of, 26 Cataract, glass-workers', 675 Cauliflower, 214 Causes of death, classification of, 895 Cavalry, 707 Cayenne pepper, 270 Celery, 214 as carrier of typhoid fever, 65 CeUulose, 23 Cements, 671 Cemetenes, sites of, 906 Census, 880 Centrifugal method for fat determina- tion, 157 Cereals, 190 Cerebrospinal meninjptis, administrative control of, 874 air as carrier of, 316 immunization in, 811 Cesspools, 745 disinfection of, 744 in relation to wells, 407 Chairs, school, 506 Chamberland-Pasteur filter, 418 Champagne, 252 Charbon, cases of, 45 Cheddar, 187 Cheese, 185 adulteration of, 187 analysis of, 188 composition of, 187 poisoning by, 188 ripened, free fatty acids in, 22 ripening of, 186 Chemical agencies affecting soils, 349 Chemical analysis of fabrics, 645 disinfectants, 583 examination of water, 456 usefulness of, relative to bacterial, 480 precipitation in sewage disposal, 490 preservation of milk, 123 preservatives, ^75 treatment in purification of water, 412 Chemotaxis, 798 Cherries, 216 Cheshire cheese, 187 Chest expansion, 712 measurements, 707 Chestnuts, 207 Chickenpox, administrative control of, 870 school attendance and, 877 schools and, 684 Chicory, 229 Children, death-rates of, 893 emplo3rment of, 677 Chinaware industry, 661 Chlorides, nutritive fimctions of, 24 Chlorinated lime solution, 743 soda as disinfectant, 589 Chlorine as disinfectant, 587 in water, 395 determination of, 463 inferences from, 473 trades, 665 Chlorosis, Egyptian, soil and, 371 Chocolate, 230 milk, 231 analyses of, 233 Cholera. See Asiatic cholera. hog, 46 water and, 435 infection, milk as cause of, 151 Chorea in school children, 690 Chromates in candies, 224 in preservation of milk, 127 detection of, 172 Chylous diarrhoea, filarial, 837 dropsy, filarial, 837 Chyluria, filarial, 837 Cider, 256 vinegar, 263 Cinnamon, 268 oil as disinfectant, 607 Circulation, effect of exercise upon, 634 Cisterns for storage of rain, 400 Citric acid, nutritive value of, 24 Clams, composition of, 39 Claret, 251 Clay, 337 Cleanliness in tuberculosis, 698 Cleansing industries, 668 Clothing, 639 disinfection of, 624, 744 materials, 640 adulteration of, 645 selection of, 647 of soldier, 714 for tropics, 774 INDEX. di7 Clothing in tuberculosis, 608 workfihops, 671 Cloves, 268 oil of, as disinfectant, 607 Coagulins, 795 recepitors. second order, 796 Coal-gas in illumination, 533 Coal-tar colors, 671 in wines, 255 Coast artillery, 707 Cocoa, 230 analysis of, 233 Cocoanuts, 207 Coefficient of traction, 637 Coenurus, 46 Coffee, 227 analyses of, 232 Cold baths, 632 in disinfection, 581 in preservation of food, 273 of nulk, 119 storage, 273 Colds, common, prevention of, 871 Collagens, 22 Color of water, determination of, 467 inferences from, 473 Coloring matters in milk, detection of, 168 Colors of clothing, 639 effect of, in relation to heat, 715 Colostrum, 107 Combustion, effect of, on air, 292, 301, 535 Communicable diseases, administrative control of, 851 Comparative mortality figures, 825 Complement, anti-, 790, 792, 793 nxation test, 798 haptophore atom group of, for im- mime bodies, 791 serum substances in immime re- actions of third order, 786, 790 thermolability of, 786, 790 zomotoxic atom groups of, 791 Complementoids in immunization, 791 Complementophilic haptophore of im- mime bodies, 789, 796 Compressed air illness, 673 Conoensed milk, 130 Condiments, 263 Conduction in heating, 520 Conductivity of clothing materials, 640 Confectionery, 223 Con^lutin, precipitation of, 22 Conjugated proteins, 21 Constitution of population, 883 Contact filtration m sewage disposal, 495 Contagion, 777 Contagious disease, hygiene for families, 876 Convection in heating, 520 Cooked meats, compositions of, 30 nulk, detection of, 172 Cooking, army, 730 effects of, on meat, 26 CooliDg in preservation of food, 273 Copper, detection of, in water, 472 food contamination by, 284 Copper sulphate in destruction of algsB, 424 as disinfectant, 595 Cordials, 281 Cordon, sanitary, 849 Com, 200 meal, 201 Corned beef, composition of, 30 Coronium in air, 292 Corrosive sublimate as disinfectant, 595 soap, 610 Cotton clothing, 715 goods, 643 trades, 660 Cotton-seed oil. Dead, transportation of^ 906 Death, causes of, classincation of, 8d5 mean age at, 901 Death-rate proportions, 893 Death-rates, infantile, illegitimacy and, 888, 891, 892 weekly, etc., 891 Denatured spirits, 671 Dengue, mosquitoes as carriers of, 838 I>ensity of population and vital statis- tics, 890 Deodorants, 572 Derived proteins, 21 Desks, school, 506, 693 Desquamations, disinfection for, 744 Destructors in garbage disposal, 502 Detention, camps of, 850 Deuterotoxin, 785 Dextrin, 23 Dextrose, 219 digestibiUty of, 219 nutritive value of, 23 Diarrhoea, chylous, filarial, 837 epidemic, soil and, 375 infantile, transmission of, by air, 317 Diarrhceal disease in army, 756 Diastase in milk, 109 DiatomacesB in water, 389 Dichromate industry, 659 Diet, hygiene of, 633 in tropics, 771 Dietaries, standard, 19 Dietary, tropical, 734 Diffusion in ventilation, 510 DigestibiUty of fish, 37 of meat, 25 comparative, 28 Digestive organs, effect of exercise upon, 636 Dinitrocresol in confectionery, 224 Diphtheria, administrative control of, 868 air as carrier of, 315 immunization in, 801 milk contaminated with, 143 school attendance and, 878 schools and, 683 soil and, 368 water and, 434 Diphyllidium, fleas as carriers of, 819 Disaccharids, 23 Diseased animals, meat of, 45 cows, milk from, 133 Diseases, acute infectious, hygiene of, 868 air-borne, 311 communicable, administrative con- trol of, 851 connected with butter, 179 fish, 39, 45 insects, 814 meats, 39, 45, 51 milk, 131 occupations, 654 soil, 363 tropics, 775 water, 431 Diseases, exciting causes of, 777 notification of, 895 blank forms for, 901 of the sailor, 764 schools and, 683 of the soldier, 752 Disinfectant solutions, 743 Disinfectants, 572 chemical, 583 metallic salts, 594 mineral salts, 598 non-metallic elements and com- poimds, 585 organic substances, 599 light, 572 practical apphcations of, 623, 744 thermic, 575 Disinfecting hoppers for excreta by steam for hospitals, 581 plants and stations, 578 Disinfection of excreta by administration of hexamethylenamin by mouth, 866 methods by formaldehyde, 612 of sick rooms, 867 Disinfections, special, 623, 747 Disposal of garbage, 500 of sewage, 483 Dissemination of infectious material, prevention of, 622 Distillation in purification of water, 417 Distilled alcoholic beverages, 257 Distilling apparatus, 458 Distomatosis, 44 District quarantine, 849 Divers' occupation, 674 Domestic filters, 418 Double windows, 524 Dracunculus, water and, 453 Drainage areas, 406 Drain-pipes, 541 Dried currants, 217 Drinking-cups, 692 Driven wells, 403 Dropsy, chylous, filarial, 837 Dry heat in disinfection, 576 Diyin^ in preservation of food, 273 Duration of life, 901 mean, 902 Dust in air, 298 determination of, 334 in trades, 650 Dusts, irritating, in trades, 656 poisonous, m trades, 661 Dutdi cheese, 187 Dwelling houses, 504 Dyeing industries, 661 Dyes, poisonous, 646 prmt, 671 Dysentery, administrative control of, 868 in army, 755 flies as carriers of, 818 immunization in, 803 in tropics, 776 INDEX, 919 E Earth-burial of the dead, 904 Eating utensils, disinfection of, 624, 744 Echinococcus in meat animals, 46 Edam cheese, 187 Egg-plant, 215 Eggs, 92 Egyptian chlorosis, soil and, 371 EhrUch's theory oi immunization, 780 Electric lighting. 536 Elephantiasis, filarial, 837 Enamelled ware, 288 Enamelling industry, 663 Endocarditis, malignant, immunization in, 810 Energy, potential, of carbohydrates, 23 of fats. 22 of fooa, 17 Enfleurage of butter, 176 Engineers, military, 707 English cheese, 187 Engravers' cramp, 674 Enteritis, milk from cows affected with, 134 Entire wheat flour, 192 Epileps}^ in school children, 690 Epitoxoids, 784 Equation of life, 901 Erysipelas, air as carrier of, 315 immunization in, 810 Essences, poisoning by, 671 Essential oils as disinfectants, 606 Ethyl alcohol, 247 Ethylenediamine-sulphate of mercury, 597 Eucalyptus as disinfectant, 606 Evaporation, 296 ExercisCj amount required, 637 hygiene of, 634 kmds of, 638 in tuberculosis, 698 Expectation of life, 902 Extract; determination of, in beer, 248 Extractive method of fat determination, 155 Eye defects in school children, 695 df ect of excessive heat upon, 675 examination of, in school children, 685 Fabrics. 640 adulteration of, 645 disinfection of, 744 Fseces, disinfection of. 623, 744 Famihes, instruction for, concerning con- tagious diseases, 876 Farinaceous preparations, 206 seeds, 190 Fat in butter, 177 determination of, 181 in mUk, 99, 102 determination of, 155 Fat-rendering, 677 Fats, nutritive value of, 22 Fats, ve^table, 208 Fatty acids, 177 seeds. Large, 206 Federal Quarantine Law, 842 Feeding of sarbage, 501 infantile, death-rates and, 893 Feetj care of, 724 Fehlmg method for sugar of milk, 159 Felt, 645 disinfection of, 744 Felting industry, 668 Fermented alcoholic beverages, 234 Ferments of milk, 107 orspiized. 920 INDEX. Food as carrier of tuberculosis, 858 of infant, disease and. See Feeding, poisoning, cases of, 73 epidemics of, 69 preservation, methods of, 272 of the soldier, 725 in treatment of tuberculosis, 697 for tropics. See Dietaries. Foods, animal, 24 composition of, 19 contamination of, by canning, 274 by metals, 284 nutritive value of, 17 vegetable, 189 Foot-and-mouth disease, 46 milk from cows affected with, 133 Football as exercise, 639 Formaldehyde as disinfectant, 611 methods of application of, 621 germicidal powers of, 619 m preservation of (ood, 281 of milk, 123 detection of, 170 of wines, 256 poisonousness of ^ 620 Formalin in disinfection, 617, 619 solution, 743 Foundry work, 669 Free ammonia in water, determination of, 459 Freezing in preservation of food, 273 FVuit, definition of, 189 sugar, 23 Fruits, 215 used as vegetables, 215 Frying, effects of, on meat, 26 Fuchsme method of detection of formal- dehyde, 176 Fumes, irritating, 665 poisonous, 667 Fungi, edible, 219 Fur clothing, 645 disinfection of, 744 Furnaces, hot-air, 523 Furniture, disinfection of, 744 school, 506, 693 GArrERS, military, 716 Galactose, 23 in milk, 109 Galleries in water-supply, 409 Galvanized pipe, action of water on, 430 Galvanizing trades, 666 Garbage, disposal of, in camps, 747 domestic and municipal, 500 Garget, milk from cows affected with, 117, 134 Gas burners, 532 burning, effect of, on air, 301, 535 illuminating, 533 pipes, 535 stovas, 522 Gases, irritating, 665 Gases, poisonous, 667 in water, 390 Gasolene in illumination, 535 Gastric secretion, maintenance of, by chlorides in nutrition, 24 Gelatin as a food, 20, 22 in thickening cream, 129 detection of, 175 Gem polishing industry, 659 German meaSes, school attendance and, 877 Germicidal power of formaldehyde, 619 Germicides, 572 Gilding trades, 668 Gin, 261 Ginger, 270 essences, poisoning from, 674 Glaisher's table, 321 Glanders, water as carrier of ^ 435 Glass, ribbed, in conveving light, 530 Glass-cutting and polishing industry, 661 Glass-grinding industry, 659 Glass-workers' cataract, 675 ' Glazed pottery ware, 287 Glazing brick trade, 666 pottei^ trade, 662 Globuliqs in nutrition. 20 solubility of, maintained by chlorides, 24 Gloesina palpalis, 818 Glucose, 221 arsenic in, 237 in beer, 236 nutritive value of, 23 vinegar, 264 Glue-making industry, 677 Glutelins in nutrition, 20 Glycerides in butter, 177 Glycoproteins in nutrition, 21 Goat meat, nitrogenous extractives in, 28 Goats' milk as carrier of Malta fever, 142 freedom of, from tuberculosis, 142 Goitre, soil and, 374 water and, 432 Gold compounds as disinfectants, 598 Golf as exercise, 638 Gonorrhcea test, 798 Gooseberries, 218 Gorgonzola, 187 Gri£am bread, composition of, 195 Grain threshing and milling industries. 660 Grape sugar, 220 digestibiUty of, 219 nutritive value of, 23 Grapes, 217 tartaric acid in, 24 Gravelly soil^ 339 Gravitation m ventilation, 511 Gravitation-water in soil, 354 Grease traps, 548 Greens, beet, 214 dandelion, 214 Groin, varicose, filarial, 837 Ground-water, 355, 385 INDEX. 715 H3rpochlorite as disinfectant, 589 in purification of water, 414 Hypochlorous acid as disinfectant, 589 Hysteria in school-children, 690 922 INDEX. Ice, 455 Illegitimacy, infantile deaih-rate and, 892 Illuiiiinating gas, 533 contamination of air by, 302 Illumination, 529 angulation of light by ribbed win- dows. 530 by combustion^ 531 effects of, on air, 301, 535 Imhoff tank in sewage disposal, 489 Immune bodies, 786, 789, 792 anti-, 790, 793 atom groups of, 796 thermostability of, 786 Inununity, 778 practical applications of, 799 Inununization, 779 to foreign albumins, milk coagulating phenomena (second order), 796 cells, distinctive phenomena (third order), 785, 786, 790 agglutination phenomena in (second order), 793 serums^ precipitating phenom- ena m (second orcler), 795 to freed toxins^ neutralization phe- nomena in (first order), 785 Immunizing substances, 789 Impetigo, schools and, 687 Incandescent burners, 532 Incinerator plants, 752 Incinerators, domestic, for garbage dis- posal, 501 Indian com, 200 meal, 201 India-rubber industry, 667 Industrial hygiene, 648 Infantile death-rates, illegitimacy and, 891, 892 Infantry, 707 Infection, 777 Infectious diseases, administrative control of, 851 due to industries, 671 predisposal to, by industries, 656 school attendance and, 877 schools and, 683 matter, prevention of dissemination of, 622 Inosite, 23 Insects, diseases and, 814 Inspection of meat and slaughtering, 90 of school-children, 693 of schools, 680 Interbody, 788 Intermediary bodies, immune bodies present before inoculation and im- munization, 788, 797 Interstate quarantine, 846 Invert sugar, 219 Iodine absorption, number of, in butter- fat, 185 Iodine as disinfectant, 590 industries, 666 Iron, action of water on, 429 contained in soil, 339 in water, 396 determination of, 467 removal of, 425 industries, 675 in nutrition, 24 in purification of water, 415 Irrigation with sewage, 491 Imtating dusts in tiides, 656 gases in trades, 665 Jams, 224 Jellies, 224 Jeguirity beans, immunizing true toxin ■ from, 783 Kaolin dust in cotton industry, 660 grinding industry, 664 Kefir, 106 Kid meat, poisoning by, cases of, 90 Kidneys, beef, mutton, etc., composition of, 30, 31 effect of exercise upon, 636 Kitchen refuse, camp, 748 domestic, 500 utensils, metallic, contamination from, 287 Koplik's sign, 684 Koumiss, 106 Kr3rpton in air, 292 Labarraque*8 solution, 589 Lace, leaded, work on, 661 Lacquer industries, 671 Lactic acid, 24 ferments. 111 Lactodensimeter, 153 Lactometer table, 160 Lactoscope, Feser's, 153 Lactose contained in butter, 177 digestibiUty of, 219 in nutrition, 23 Lacto-serums, 796 Lffivulose, 219, 220 in nutrition, 23 Lager beer, 234 Lamb, characteristics of good, 27 composition of. 923 Laundry tubs, 569 Lawrence tank, 489 Lead, action of water on, 425 chromate in candies, 224 detection of, in water, 469 foods contaminated by, 1$86 industries, 661 Leather, 645 disinfection of, 744 varnishing trade, 661 Leavening of bread, 194 Lecithoproteins, 21 Leeks, 214 Leffmann-Beam process of fat analysis, 182 Leggings, military, 716 Legumes, 203 Legumin, precipitation of, 22 Lemon-juice, 265 Lentils, 205 Lentz's regenerator, 614 Lettuce, 214 Leucocytes in milk, 118 Leucolysins, anti-, 790 Liebig condenser, 458 Life, duration of, 901 mean, 902 expectation of, 902 tables, 903 Lifetime, mean, 901 Light, bad, effect of, on contents of stored ground-waters, 401 as disinfectant, 572 good, effect of, on contents of stored surface-waters, 401 ultra-violet rays in purification of water, 417 Lighting, 529 angulation of light by ribbed win- dows. 530 by combustion^ 531 effects of, on au*, 301, 535 Lime, chlorinated, 743 contained in soil, 339 in water, 396 as disinfectant, 592 milk of. 743 in purification of water, 413 Limes, juice of, 267 Linen. 644 clothing, 715 disinfection of, 624, 744 industries, 660 Linotyping industry, 661 Lipase in milk, 109 Liqueurs, 261 Liquid soap, 611 Liauor cresolis compK>situs, 601 Litnarge in pottery industry, 662 Liver, beef, mutton, etc., composition of, 30,31 rot in sheep, 44 Loams, 338 Lobster, composition of, 39 Luebert's method of detection of for- maldehyde, 172 Luminosity of flame, 531 Lung capacity, 772 Lungs, beef, composition of, 30 Lymphangitis, filarial, 837 Lsrmphatic varix, 837 Lymph-scrotum, 837 Lysoform as disinfectant, 611 Lysol as disinfectant, 602 Lysophore, atom groups of complements in third order immime reactions, 791 Maccaroni, 196 Mace, 270 Macrogametes of malaria, 825 Magnesium contained in soil, 339 in water, 396 in nutrition, 24 Maize, 200 Malaria, administrative control of, 875 in army, 755 mosqmtoes as carriers of, 821 parasite of, 824 prevention of, 830 soil and, 369 water and, 434 Malic acid, 24 Malignant endocarditis immunization, 870 epizootic catarrh, 46 GBdema, soil and, 369 Malt, 234 sugar, 23 vinegar, 264 Malta fever, transmission of, by goats' milk, 142 Maltose, digestibility of, 219 in nutntion, 23 Manmiitis. 47 milk from cows affected with, 134 Mange, 46 Mantle burners, 532 Manure, disposal of, 748 Maple sugar, 23, 220 Marching. Meat, extracts of, 33 powderS) 34 Meats, 25 characteristics of good, 27 compositions of, 2§ cysticercus from, ^ inspection of, 90 lactic acid in, 24 parasitic disease and, 39 poisoning by, 65 cases of, 77 characters of, which cause, 47, 71 sugar in, 23 transmission of infections and, 45 trichinosis from, 40 tuberculosis and, 47 Mechanical filters, 423 ventilation, 519 Medical inspection of school-children, 683, 693 of schools, 680 appointment and control in, 702 service, army, 703 Meningitis. See Cerebrospinal meningitis. Mental defects in school-children, 691, 700 Menthol as disinfectant, 606 Mercuric chloride as disinfectant, 595 cyanide as disinfectant, 597 nitrate in industries, 668 Mercury in industries, 668 soaps, 610 Meta-cresol as disinfectant, 600 Metakaline as disinfectant, 612 Metallic contaminations of foods, 284 in canning, 274 dusts in occupations, 658 peroxides as disinfectants, 618 salts as disinfectants, 594 Metaproteins, 21 Mets^on in air, 292 Methyl alcohol in beer, 245 Metschnikoff's theory, 798 Mica in wall-paper industry, 659 Microfilaria, 838 Microgametocytes of malaria, 825 Microorganisms in air, 298 Microscopical examination of fabrics, 646 Military hygiene, 703 Milk, 98 added water, 128 detection of, 162 adulterations of, 127 analyses of various breeds, 101 periods of lactation, 102 seasons, 102 artificial coloring of, detection of, 168 bacteria in, 110 quantity of, 112 cane-sugar m. detection of, in pres- ence of milk-sugar, 175 chemical preservatives of, 123 detection of, 170 constituents of, 102 Milk contaminated from without by pathogenic organisms^ 143 contamination of, from diseased cows, 133 cooked, detection of, 172 diseases connected with^ 131 examination and analysis of, 153 ferments in, 107 organised, 111 old, detection of. 174 pasteurization oi, 119 poisoning; cases of, 131 preservation, methods of, 119 standards for, 98, 128 sugar of, 23^ 103 determmation of, 159 Milling industries, 660 Mineral adds as disinfectants, 598 dusts in occupations, 659 matter in milk, 104 in water, 395 Miners' anemia, 371, 672 Mirrors, manufacture of, 668 Moisture in air, determination of, 319 maintenance of, in factories, 676 n^d of, in heating, 525 in soil, 353 determination of, 380 Molasses, 221 vinegar, 264 Monosaccharids, 23 Mortality figure, 895 Mosouitoes, dengue and, 838 oiseasee connected with, 820 filarial disease and, 831 malaria and, 756, 821 yellow fever and, 831 Mulberries, 218 Multiceps^ 46 Multipartial inmiune body, 793 Mumps, administrative control of, 871 school attendance and, 878 schools and, 684 Municipal quarantine, 849 Muscle sugar, 23 Mushrooms, edible, 219 Mussels, composition of, 39 poisoning by, cases of, 73 Mustard, 267 Mutton, characteristics of good, 27 composition of, by cuts, 31 N Naqana, flies as carriers of, 818 Nails, tinned, 661 Naphtha in trades, 667 Natural immunity, 778 Naval hy^ene, 758 sleeping quarters, 763 Neon in air, 292 Nephrotoxins, 790 Nervous system, effect of exerciBe upon, 635 phosphates in nutrition of, 24 troubles m school-children, 689 INDEX. 925 Nesslerizing tubes, 459 Nessler's reagent, 457 Neuroses, professional, 674 Neurotoxins, 790 Nickel, foods contaminated by, 287 polishing industry, 661 ware, 288 Nitrates in water, 394 determination of, 463 inferences from, 473 Nitric acid in water, 394 Nitrites in water, 394 determination of, 462 inferences from, 473 Nitrobenzol in industries, 668 Nitrogen acids in air, 295 in air, 291 as ammonia. See Ammonia, compounds in water, determination ol^462 as mtrates. See Nitrates, as nitrites. See Nitrites, in soil, 339 Nitrogenous extractives in meats, 25, 28 Nitrous acid in water, 394 fumes in industries, 666 Norton tube well, 404 Nose, examination of, 685 Notification of diseases, 895 blank form for, 901 Nucleoproteins, 21 Nurses, school, 682, 694 Nutmeg, 270 Nutritive fimctions of maintenance of alkalinity, 24 of energy, 17, 22, 23 pi heat, 22, 23 of secretions, 24. of solubilities, 24 of tissue substance, 19, 24 value of carbohydrates, 22 of fats, 22 of inorganic salts, 24 of oi'ganic acids, 24 of proteins, 20 Nuts, 206 Oatmeal, 200 Oats, 199 Occupational diseases, 654 neuroses, 674 Occupations, classification of, 655 hygiene of, 648 Odor of water, determination of, 468 inferences from, 473 Offensive trades, 676 Oil burning, effects of, on air, 301, 535 stoves, 522 Oils, essential, as disinfectants, 606 hardened, 210 lard, 97 vegetable, 208 Olein ot butter-fat, 177 in nutrition, 22 Oleomargarine, 177 OUve oil, 208 Onions^ 214 Open nres, 521 Open-air schools, 699 Ophthalmia neonatorum, administrative control of, 872 notification of, 873 Opsonins, 799 Orange, anilin-, in milk, detection of, 170 Oranges, 216 Orchitis, filarial, 837 Organic acids in nutrition, 24 matters in air, 307 in soil, determination of, 381 in water, 391 determination of, bv oxy- gen, required test for, 465 Ortho-cresol as disinfectant, 600 Oxalic acid in nutrition, 24 standard solution of, 325 Oxen, meat of, 26 Oxidation in purification of water, 411 Oxidizing beds in sewage disposal, 489 Oxydases in milk, 110 Oxygen in air, 289 as disinfectant, 585 required in water, determination of, as test for organic matters, 465 Oxyuris, water and, 453 Oyster plant, 213 Oysters, composition of, 39 poisoning by, cases of, 76 as transmitters of cholera, 64 of t3rphoid fever, 59 Ozone contained in air, 294 determination of, 333 as disinfectant, ^85 use of, in purification of water, 416 Pail system of sewage disposal, 487 Painted surfaces, dismfection of, 744 Painters' trade, 663 Palmitin of butter-fat, 177 in nutrition, 22 Paper-coil method determination of fat, 155 Papered walls, disinfection of, 744 Para-cresol as disinfectant, 600 Paraform lamp, 615 Paraformaldehyde. 618 Paralysol as disinfectant, 611 Parasitic disease connected with dusts, 671 flies and, 818 meat and fish and, 39 water and, 453 ictero-hematuria, 46 Parat3rphoid, 68 Parmesan cheese, 187 Parsnip, 213 Partial immune body, 793 Passive immunity, 779, 781 Pasteurization of milk, 119 cooking effects of, 173 926 INDEX, Peaches, 216 Peanut oU, 209 Peanuts, 207 Pears, 216 malie acid in, 24 Peas, 204 sugar in, 23 Peat soil. 338 Pectin or fruits, 215 in nutrition, 23 Pectose in nutrition, 23 Pediculosis, schools and, 686 Pepper, 268 cayenne, 270 Peppermint as disinfectant, 606 essences, poisoning from, 671 Pepsin in milk, 109 Peptides in nutrition, 22 Peptones in nutrition, 22 Peptonizing ferments in milk, 112 Perch, parasitic disease and, 39 Perflation in ventilation, 513 Perfumes, 671 Pericarditis, traumatic, in cattle. 47 Permanganate of potassium as disinfect- ant, 595 in purification of water, 413 with formalin, 617 Permeability of building materiab to air, 512 of soil, 341 to air, determination of, 377 to water, determination of, 378 Peroxide of barium as disinfectant, 618 of hydrogen as disinfectant, 586 presence of, in air, 295 use of, in preservation of food, 283 of milk, 125 Perry, 257 Person, care of, in tropics, 775 disinfection of, 744 hygiene of, 631 Pfeiffer 8 phenomenon, 786 Phagocytosis theory, 798 Phagolysis, 798 Phaseomannite in nutrition, 23 Phenic acid as disinfectant, 599 Phenol as disinfectant, 599 Phenoldisulphonic acid, 463 Phenolphthalein solution, 325 Phlebitis, umbilical, in animals, 47 Phloroglucin method of detection of for- maldehyde, 171 Phosphate pjowders, 271 Phosphates in nutrition, 24 presence of, in soil, 339 Phosphorproteins in nutrition, 21 Phosphorus in industries, 668 Physical defects in school-children, 700 exercise, 634 measurements, 707 Pianists' cramp, 674 Pickled tongues, composition of, 30 Pike, parasitic djsease connected with, 39 poisoning by, cases of, 76 Pillows, disinfection of, 744 Pimento, 270 Pin-worms, water and, 453 Pipes, drain, 541 gas, 535 service, 570 soil, 538 waste, 543 Plague. 927 Pork, composition of, 30 cysticercus in, 40 poisoning by, cases of, 79 trichinsd in, 40 Porter, 234 Posts, army, 735 Potability of waters, 472 Potassio-mercuric iodide with alkalies, 610 Potassium bitartrate in leavening, 271 chromate in candi^, 224 permanganate bs disinfectant, 595 in purification of water, 413 wim formalin, 617 salts in nutrition, 24 sulphate method of detection of for- maldehyde, 172 Potatoes, 210 antiscorbutic value of, 124 Potential energy of foods, 17 Pottery industries, 662 irritating dusts in, 659, 664 poisonous dusts in, 662 Poulards as food^ 26 Poultry, compositions of, 32 Precipitation in sewage disposal, 490 Precipitins, immune bodies, second order, 795, 796 thermostability of, 795 Precipitoids in immunization, 795 Preservation of food, 272 of milk, 119 Preservatives, 275 in beer, 239 detection of, 249 in milk, 123 detection of, 170 in wines, detection of, 256 Preserved fish, composition of, 39 Prevention of dissemination of infectious materials, 622 Print dyes, 671 Printing industry, 661 Prismatic windows for increasing light, 530 Privy vaults, 745 Probable duration of life, 901 Process butter, 179 Professional neuroses, 674 Prophylactic immunization, 799 Protamines in nutrition, 21 Proteids, 19, 20 Proteins of milk, 99, 103 determination of, 161 in nutrition, 19 simple, conjugated, and derived, 20, 21 Proteoses in nutrition, 21 Protochloride of tin in molasses, 221 Prototoxin, 785 Prototoxoids, 784 Protozoa, malarial, 824 Psychrometer, 320 Ptomains, 66 Public Health Service. U. Rest; hygiene of, 633 m treatment of tuberculosis, 698 Rhubarb, oxalic acid in, 24 Ribbed windows for directing light, 530 Rice, 202 Ricin from castor bean, immuniaing poi- son, 781, 783 Rickets, cause of, 24 Rinderpest, 45 milk from cows affected with, 133 Ringworm, schools and, 686 Ripening of cheese, 186 free fatty acids in, 22 River discharge of sewage, 486 Roasting, effects of, on meat, 26 Rocky Mountain fever, ticks as carriers of, 839 Room disinfection, 626, 744 temperature, regulation of, 524 Roots, edible, 213 antiscorbutic value of, 24 Roquefort chepse, 187 Rot in sheep, 44 Rotary cowls, 513 Round-worms, drinking-water and, 453 Rowing as exercise, 639 Rubber clothing, 644 disinfection of, 744 industries, 667 Rum, 261 Rusks, 196 Rye, 198 8 St. Gothard tunnel disease, 371, 672 St. Vitus' dance in school children, 690 Saccharids in nutrition, 23 Saccharine preparations, 219 Saso, 206 Sauors, diseases of, 764 Sal ammoniac in industries, 666 Saleratus in rising of bread, 194 Salicylic acid in beer, 239 detection of, 249 in food preservation, 280 in milk, 125 detection of, 170 in wines, 256 Salmon, parasitic diseases and, 39 poisoning by, cases of, 75 Salol-splitting ferment in milk, 109 Salt, 267 in butter, 177 determination of, 181 in food preservation, 273 rising of bread, 194 soils, 339 in water, 395 Salts, inorganic, in nutrition, 24 of tin m molasses, 221 Samp, 200 Sand filters, 421, 423 soils, 337 Sanitary cordon, 849 policing, 746 regulations, 749 Saponification equivalent in butter-fat, 185 Saprol as disinfectant, 603 Sausages, 34 poisoning by, 72 cases of, 88 Scabies, schools and, 685 Scarlet fever, administrative control of, 869 disinfection of person after, 744 immunization, 810,. 929 Shoeing, 647 Shoats, edible, 214 Shrimp, composition of, 39 Sick room, disinfection of, 867 Side-chain theory of immunization, 780 SiHca in soil, 339 SiUcates in water, 396 Silk, 642 disinfection of, 744 weighted, in industries, 661 Silver compounds as disinfectants, 597 Sinks, 568 military, 745 Skin diseases^ schools and, 685 disinfection of. 624 after scarlet fever, 744 effect of exercise upon, 635 Slaughtering inspection, 90 Sleepj hygiene ot, 633 Sleeping quarters, naval, 763 Sleeping-sickness, flies as carriers of, 818 Slop sinks, 569 Sludge in sewage, treatment of, 489 utilization of, 485 Smallpox, vaccination and, 851 Smeltmg industries, 666 Smoke nuisance, 318 Smoked fish, composition of, 39 Smoking in food preservation, 273 acetic acid and creosote in, 273 Snake venom, true toxin with receptors from animal cells, 783 Soap-making industries, 677 Soaps as disinfectants, 607 medicated, 609 Soda, chlorinated, as disinfectant, 589 Sodium aurate as disinfectant, 598 bicarbonate, 271 carbonate as disinfectant, 591 salts in nutrition, 24 in water, 396 Soil, 337 bacteria in, 361 capillarity of, determination of, 380 diseases connected with, 363 effects of biological and chemical agencies upon, 349 of vegetation upon, 358 examination of, 375 bacteriological, 383 permeability of, to air, 341 * determination of, 377 to water, 344 determination of, 378 pollution of^ 359 determination of, 381 pore-volume of, 340 determination of, 376 temperatures, 347 water-retaining capacity of, 345 determination of, 380 water-transmitting capacity of, 344 determination of, 378 Soil-air, 350 < examination of, 381 59 « Soil-dampness, diseases and, 363 Soil-moisture, determination of, 380 effect of vegetation upon, 357 Soil-water. in com, 201 nutritive value of, 23 in potatoes, 211 in rice, 202 State quarantine, 847 930 INDEX. Statistics of diseases due to occupations, fallacy of, 648 vital, 879 Steam in disinfection, 577 heatinff, 523 Stearin of butter-fat, 177 in nutrition, 22 Steel-grinding industries, 658 Stegomyia ciQopus, 833 yeflow fever and, 831 Stems, edible, 214 Sterilization. See Disinfection. of milk, 119 Sterilizing hopper. 931 Thermostability of precipitins, 705 Throat, examination of, 685 Thyme as disinfectant, 606 Ticks, disease connected with, 830 Tilth, 337 Tin, action of water on, 430 in canning, 274 foods contaminated by, 287 protochloride in molasses, 221 m water, detection of, 472 Tinned nails, 661 Toast, 106 Tobacco industry, 660 Tomatoes, 215 oxalic acid in, 24 Tongjue, beef, comiiosition of, 30 Tonsillitis due to milk, cases of, 134 schools and, 685 Towels, disinfection of, 744 Toxins, 780. 782 intracellular, 781 Toxoids, 784 Toxones, 784 Toxonoids, 785 Toxophore atom groups of toxins, 782 Traction coefficient in work calculation, 637 Trades, dangerous, 650 hygiene of, 648 offensive, 676 Transpiration by animals and plants, 206 Traps, grease, 548 pipe, 541, 544 Travis tank in sewage disposal, 480 Trichinosis, meats and, 40 symptoms of, 43 Trichocephalus, water and, 454 Tricholysins, 700 Trichuris trichiura, flies in transmission of. 818 Tricklinff filters in sewage disposal, 406 Tricresol as disinfectant, 601 Trillat's autoclave, 613 - Tripe, beef, comix>Bition of, 30 Tritotoxine, 785 Tropical army rations, 731 dietary, 734 diseases, 775 hospital tent, 740 hygiene, 768 Trousers, miUtary, 716 Truffles, edible, 210 Trypanosomes, fleas in transmission of , 810 flies in transmission of, 818 Trypsin in milk, 100 Tsetse-fly, disease and, 818 Tube wells, 404 Tubercle bacillus, destruction of, 857 Tuberculin, 811 tests of cattle, 48 Tuberculosis, administrative control of, 857 army and, 753 of beef cattle, 47 butter affected with, 170 Tuberculosis, employer's relation to, 863 hygiene of, 850 in occupations, 863 for school-children, 607 for the sick, 862 immunization to, 810 industries and, 648, 656, 671, 863 meats infected with, causes for con- denmation of, 40 milk from cows affected with, 137 navy and, 764 open-air schools for, 600 precautions in exposiu*e to, 861 predisposinjo; causes of, in occupa- tions, 656 prevention of, 607, 857, 850, 863 relation of human to bovine, 51 schools and, 607 transmission of, 857 by air, 311 to animals by feeding, 51 by flies, 817 in food, 47, 137, 170 by soil, 364 what it is, 857 Tubers, edible, 210 Tubs, laundry. Uncinariasis ankylostomum, thymol in removal of, 374 in underground work, 672 water and, 454 Underclothing, disinfection of, 744 military. 718 Underground work, 672 Unioeptors, 796 Uniforms, military, 716 United States meat inspection, 91 PubUc Health Service, 842, 846 quarantine law, 842 standards of butter, 176 of cane-sugar, 219 of cheese, 185 of condensed milk, 130 of cottonseed-oil, 209 of cream, 129 of lard, 96 of maple sugar, 220 of milk, 98 of molasses, 221 of olive oil, 208 of vinegars, 263 Urinals, 564 camp. 746 disinfection of, 581 Urine, disinfection of, 623, 744 by administration of hexa- methylenamin by mouth in typhoid, 866 Uroglena in water, 389 Utensils, eating, disinfection of, 624, 744 kitchen, metallic, contamination from, 287 Vaccination, smallpox and, 851 Vaccine animals as food, 46 streptococcic, 810, 812 therapy, 799 Vacuum system of ventilation, 519 Vapor in air. 296 Varicella, scnools and, 684 Varicose lymphatics, filarial, 837 Varnishes, poisoning from, 671 Veal, characteristics of good, 27 composition of, by cuts, 31 poisoning bv, 71 cases of, 77 Vegetable fats, 208 foods, 189 marrow, 215 Vegetables, definition of, 189 Vegetation, effect of, on soil, 357 on water^ 412 Venereal diseases m army, 757 Venison, nitrogenous extractives in, 28 Venom of snake, true toxin with receptors from animal ceUs, 783 Ventilating stoves, 522 Ventilation, 507 air filtration in, 527 determination of rate, 527 heating and, 519 Ventilation, heating and, moisture, need and supply of, in heated air, 525 mechanical, 519 natural, 510, 515 of ships, 764 VermiceUi, 196 Vermuth, 262 Vinegar, 263 examination of, 265 Violinist's cramp, 674 Virgin oil. 933 Water, purification of, 410 methods of, 412 rain-, 384 as supply, 399 residue in, determination of, 464 sanitary classification of, 410 soil, 353 retaining capacity of, 345 determination of, 380 transmitting capacity of, 344 determination of, 378 storage of, 399, 412 substances normally in, 390 mineral, 395 organic, 391 supplies, 399 camps, 742 naval, 762 surface-, 385 as supply, 400 vapor, 296 capacity of air in, 320 determination of air in, 319 Water-closets, 554 for disinfectii^ discharges, 581 disinfection ofj 630 of schools, 692 of ships, 767 Water-cress, 214 in transmission of typhoid, 65 Water-gas in illumination, 533 Watermelon, 218 Waterproof blankets, 719 clothing, 644 Weekly death-rates. 891 Weight of body, effect of exercise upon, 636 height, and chest measurements, 707 Weighted lace, silk work and, 661 WelL 402 drainage area of, 406 pollution of, 407 Welsbach burners, 532 Werner-Schmidt method of determination of fat, 156 Wheat, 190 bread, 193 flower, 191 Wheeling as exercise, 639 Whip-worms, water and, 454 Whiskey, 259 White-wash as disinfectant, 592 Whole-wheat flour, 192 Whooping-cough, administrative control of, 871 school attendance and, 878 schools and, 684 Widal reaction in typhoid fever, 794 Windows, double, 524 ribbed, for dnrecting light, 530 Wine vinegar, 264 Wines, 250 adulterations of, 252 analysis of, 254 preservatives in, 256 Wolpert's method of determination of O0„ 330 Women, employment of, 677 Wood-alcohol poisoning, 671 Wool in clothing, 716 industries, 672 Woolen goods, 641 disinfection of, 744 Wool-sorters' disease, 672 Work, physical, 637 Wonxis, transmission of, by flies, 818 by water, 453 Wormwood, 26( Writers' cramp, 674 Xanthin, 28 Ybabt, 270 rising of bread, 194 Yellow fever, admmistrative control of, 875 prevention of, 835 soil and, 369 transmission of, experimental, 832 mosquitoes in. 831 species of, 833 water and, 434 Zeiss' inmiersion refractometer, 164 Zinc, action of water on, 430 chloride as disinfectant, 594 contamination of foods by, 287 of water by, 430 detection of, 471 fumes in industries, 669 smelting industries, 661 Zurischenhdrper immune bodies present before inoculation and immunization, 788, 797 Zygotes of malaria, 825 Zymolytic atom groups of complements in third-order reasons, 791 Zymophore atom groups of immune bodies in second-order reactions, 796 Zymotic death-rate, 891 i. 