Germinating pseudospores of _Coleosporium Sonchi_. 144 83. Germinating pseudospore of _Melampsora betulina_. 144 84. Germinating pseudospore of _Uromyce appendiculatus_. 145 85. Germinating pseudospore of _Puccinia Moliniæ_. 146 86. Germinating pseudospore of _Triphragmium Ulmariæ_. 146 87. Germinating pseudospore of _Phragmidium bulbosum_. 147 88. Germinating pseudospores of _Podisoma Juniperi_. 149 89. Germinating pseudospore of _Tilletia caries_. 150 90. Pseudospore of _Ustilago receptaculorum_ in germination, and secondary spores in conjugation. 151 91. Conidia and zoospores of _Cystopus candidus_. 151 92. Resting spore of _Cystopus candidus_ with zoospores. 152 93. Zygospores of _Mucor phycomyces_. 158 94. Sporidium of _Ascobolus_ germinating. 161 95. Zygospore of _Mucor_. 164 96. Zygospore of _Rhizopus_ in different stages. 166 97. Conjugation in _Achlya racemosa_. 169 98. Conjugation in _Peronospora._ 171 99. Antheridia and oogonium of _Peronospora_. 172 100. Conjugation in _Peziza omphalodes_. 176 100a. Formation of conceptacle in _Erysiphe_. 176 101. _Tilletia caries_ with conjugating cells. 178 102. _Aspergillus glaucus_ and _Eurotium_. 190 103. _Erysiphe cichoracearum_, receptacle and mycelium. 192 104. Twig with _Tubercularia_ and _Nectria_. 193 105. Section of _Tubercularia_ with conidia. 193 106. D. _Nectria_ with _Tubercularia_, ascus and paraphyses. 195 107. Cells and pseudospores of _Æcidium berberidis_. 201 108. Cells and pseudospores of _Æcidium graveolens_. 201 109. _Torrubia militaris_ on pupa of a moth. 243 FUNGI THEIR NATURE, USES, INFLUENCES, ETC. I. NATURE OF FUNGI.