LIST OF ILLUSTRATIONS.
| FIG. | PAGE | |
| 1. | Agaric in Process of Growth. | [18] |
| 2. | Section of Common Mushroom. | [19] |
| 3. | Sterile cells, Basidia, Cystidium, from Gomphidius. | [21] |
| 4. | Polyporus giganteus (reduced). | [23] |
| 5. | Hydnum repandum. | [24] |
| 6. | Calocera viscosa. | [25] |
| 7. | Tremella mesenterica. | [25] |
| 8. | Basidia and spores of Phallus. | [28] |
| 9. | Basidia and spores of Lycoperdon. | [30] |
| 10. | Threads of Trichia. | [32] |
| 11. | Arcyria incarnata, with portion of threads and spore. | [33] |
| 12. | Diachæa elegans. | [34] |
| 13. | Cyathus vernicosus. | [34] |
| 14. | Cyathus, Sporangia and spores. | [35] |
| 15. | Asterosporium Hoffmanni. | [36] |
| 16. | Barren Cysts and Pseudospores of Lecythea. | [37] |
| 17. | Coleosporium Tussilaginis. | [37] |
| 18. | Melampsora salicina, pseudospores of | [37] |
| 19. | Cystopus candidus, conidia of | [38] |
| 20. | Xenodochus carbonarius, pseudospore. | [39] |
| 21. | Phragmidium bulbosum, pseudospores. | [39] |
| 22. | Pseudospores of Puccinia. | [40] |
| 23. | Thecaphora hyalina, pseudospores. | [41] |
| 24. | Æcidium Berberidis, peridia of | [41] |
| 25. | Helminthosporium molle, threads and spores. | [43] |
| 26. | Acrothecium simplex. | [44] |
| 27. | Peronospora Arenariæ. | [44] |
| 28. | Polyactis cinerea. | [45] |
| 29. | Peziza Fuckeliana, with ascus and sporidia. | [48] |
| 30. | Penicillium chartarum. | [50] |
| 31. | Mucor mucedo, with sporangia. | [51] |
| 32. | Small portion of Botrytis Jonesii. | [53] |
| 33. | Section of cup of Ascobolus. | [57] |
| 34. | Asci, sporidia, and paraphyses of Ascobolus. | [59] |
| 35. | Perithecium of Sphæria. | [61] |
| 36. | Uncinula adunca, conceptacle with appendages. | [62] |
| 37. | Agaricus nudus. | [66] |
| 38. | Scleroderma vulgare, Fr. | [69] |
| 39. | Ceuthospora phacidioides. | [70] |
| 40. | Rhopalomyces candidus. | [74] |
| 41. | Mucor caninus. | [75] |
| 42. | Sphæria aquila, cluster of perithecia. | [78] |
| 43. | Morchella gigaspora, from Kashmir. | [99] |
| 44. | Cyttaria Gunnii | [101] |
| 45. | Spores of Agarics | [121] |
| 46. | Spores of Lactarius | [121] |
| 46a. | Spores of Gomphidius | [122] |
| 47. | Spores of Polyporus, Boletus, and Hydnum. | [122] |
| 48. | Diachea elegans, capellitium of | [123] |
| 49. | Spore of Hendersonia polycystis. | [124] |
| 50. | Spores of Dilophospora graminis. | [124] |
| 51. | Spores of Discosia. | [124] |
| 52. | Spore of Prosthemium betulinum. | [124] |
| 53. | Spore of Stegonosporium cellulosum. | [125] |
| 54. | Stylospores of Coryneum disciforme. | [125] |
| 55. | Spores of Asterosporium Hoffmanni. | [125] |
| 56. | Spores of Pestalozzia. | [126] |
| 57. | Bispora monilioides, concatenate spores | [126] |
| 58. | Pseudospores of Thecaphora hyalina. | [127] |
| 59. | Pseudospores of Puccinia. | [127] |
| 60. | Pseudospores of Triphragmium. | [127] |
| 61. | Pseudospores of Phragmidium bulbosum. | [127] |
| 62. | Winter spores of Melampsora salicina. | [127] |
| 63. | Spores of Helicocoryne. | [129] |
| 64. | Sporidium of Genea verrucosa. | [130] |
| 65. | Alveolate sporidium of Tuber. | [130] |
| 66. | Asci, sporidia, and paraphyses of Ascobolus. | [131] |
| 67. | Sporidium of Ostreichnion Americanum. | [132] |
| 68. | Ascus and sporidia of Hypocrea. | [133] |
| 69. | Sporidium of Sphæria ulnaspora. | [133] |
| 70. | Sporidia of Valsa profusa. | [133] |
| 71. | Sporidia of Massaria fœdans. | [134] |
| 72. | Sporidium of Melanconis bicornis. | [134] |
| 73. | Caudate sporidia of Sphæria fimiseda. | [134] |
| 74. | Sporidia of Valsa thelebola. | [134] |
| 75. | Sporidia of Valsa taleola. | [135] |
| 76. | Sporidium of Sporormia intermedia. | [135] |
| 77. | Asci and sporidia of Sphæria (Pleospora) herbarum. | [135] |
| 78. | Sporidium of Sphæria putaminum. | [135] |
| 79. | Basidia and spores of Exidia spiculosa. | [139] |
| 80. | Germinating spore and corpuscles of Dacrymyces. | [140] |
| 81. | Germination of Æcidium Euphorbia. | [142] |
| 82. | 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. | [148] |
| 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. | [165] |
| 96. | Zygospore of Rhizopus in different stages. | [167] |
| 97. | Conjugation in Achlya racemosa. | [169] |
| 98. | Conjugation in Peronospora. | [171] |
| 99. | Antheridia and oogonium of Peronospora. | [172] |
| 100. | Conjugation in Peziza omphalodes. | [175] |
| 100a. | Formation of conceptacle in Erysiphe. | [176] |
| 101. | Tilletia caries with conjugating cells. | [178] |
| 102. | Aspergillus glaucus and Eurotium. | [189] |
| 103. | Erysiphe cichoracearum, receptacle and mycelium. | [191] |
| 104. | Twig with Tubercularia and Nectria. | [193] |
| 105. | Section of Tubercularia with conidia. | [194] |
| 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] |