_Æcidiacci_, structure of, 41. _Æcidium_ and _Puccinia_, 199. germination, 141. _Agaricini_, habitats of, 233. structure of, 17. Agaric of the olive, 108. Agarics, growth of, 138. Algo-lichen hypothesis, 10. Alveolate spores, 130. Amadou, 103. American floras, 281. fungi, 281. Antheridia, presumed, 171. Appearance of new forms, 248. Arrangement of families, 80. Asci and sporidia, 131. in Agarics (?), 23. their dehiscence, 59. _Ascobolei_, structure of, 56. _Ascomycetes_, classification of, 75. distribution of, 277. habitats of, 241. structure of, 55. _Aspergillus glaucus_, 187. Atmosphere, spores in, 214. Barberry cluster-cups, 201. Barren cysts of _Lecythea_, 37. Basidiospores, 120. Beech morels, 101. Beefsteak fungus, 96. Berberry and mildew, 199. _Boletus_, esculent species, 95. Books on structure, 63. _Bulgaria_, its dualism, 198. Bunt and smut, 225. spores, germination of, 150. _Cæomacei_, structure of, 36. Camp measles and fever, 213. Caudate sporidia, 134. Champignon, fairy-ring, 94. Change of colour, 114. Chantarelle, the, 93. Cholera fungi, 213. Ciliated stylospores, 124-6. Classification of _Ascomycetes_, 75. _Coniomycetes_, 69. fungi, 64. _Gasteromycetes_, 66. _Hymenomycetes_, 65. _Hyphomycetes_, 73. _Physomycetes_, 74. tabular view, 80. Collecting fungi, 287. Colour and its variation, 117. Conditions of growth, 269. Conidia of _Erysiphei_, 62. _Mucor_, 53. _Peziza_, 46. _Sphæriæ_, 192. _Coniomycetes_, classification of, 69. _Coniomycetes_, habitats of, 38. Conjugating cells, 165. Conjugation in _Peronospora_, 171. _Peziza_, 175. Copulation in _Discomycetes_, 173. fungi, 163. Corn, mildew, and rust, 224. _Cortinarius_, species of, 91. Cotton plant diseases, 228. Cultivation of fungi, 253. _Sclerotia_, 261. truffles, 258. Currant twig fungus, 193. Cystidia, 21. _Dacrymyces_, germination of, 140. De Bary, on conditions of study, 183. Decay rapid, 9. Dehiscence of asci, 58. Dimorphism in moulds, 187. of _Mucor_, 53. Disappearance of species, 268. _Discomycetes_, 56. Dissemination of spores, 119. Distribution, geographical, 266. Dried fungi, esculent, 87, 94. Drying of fungi, 289. Dry rot, 223. Dualism in _Melanconis_, 197. _Podisoma_, 203. _Polyactes_, 45. _Uredines_, 185. Edible fungi in America, 88. Ergotized grass, 217. _Erysiphe_, conjugation, 176. _Erysiphei_, polymorphism, 191. Esculent fungi, 82. European floras, 279. Examination of fungi, 289. Exotic floras, 280-5.