None
480; pomi, 163 Verpa digitaliformis, 171 Verticillium albo-atrum, 646 Vibio cholera, rapidity of cell division, 24 Villia, 141 Violet leaf -spot, figure of, 559 Violet spot diseases, 558 Virescence, 339 Volutin in fungi, 53 Volva, 232 Von Tavel, Dr. Worsdell, W. C, book of, 340 Wound-cork, 376; description of, 383 Wounding of plants, artificial, 648 Wound- wood, 376, 381, 382 X Xylaria Cookei, 62; digitata on old wood, 164; hypoxylon, 62; polymorpha on old tree stumps, 164 Xylariaceae, characters of family, 164 Yeasts, 52; 134 et seq.; counting cells of, 617; character of fermentation, i37> 595 ; filna formation, 137; on gypsum blocks, 622; spores, 622; sporulation, 137, with zymase, 59 Yellow rust of wheat, 203 Yellows of peach, 573 Yolk of eggs, 603 Youngken, H. W., 39 Zeiller, work on fossil fungi, 82 Zoocecidia, 3^5 Zooglcea, 23 Zoology emphasized, 271 Zopf, W., cited, 7, 53, 56; handbook of, 55 Zygomycetales, 5c; absence of cellulose, 52; bibliography of, 105; character of order, 92, 93; key to families, 97 Zygosaccharomyces, 141 Zygospores, 50 Zymase, 56, 59 Zymogen, 57 Zymogens. 25 r LAKE MEDICAI, UBRARY #l^y.^ MAR 7 1932 (1)1 :;s ■:.. AUG 7 195; Mr 2 0 iss gov 8 -' iijt>7 ^lf°l HarshbRrprer. J.W. 44171- HS2 A text-took of mycology pa-ttioioa. 