Index. 



28 5 



Micropyle of Pinus, 206. 



Ranunculus, 234. 



Microspores, 173, 201, 212, 213, 232, 



237, 249- 



Milk, souring of, 65. 

 Mitosis, Lecture XXVIII. , 250-259 (Figs. 



90, 91). 



Modified parts and evolution, 272. 

 Monaster, 253. 



Monocotyledons, 240, 244, 245. 

 Morphology, evidence from, 271. 

 Mortality of organisms, 82. 

 Mould, blue. See Pentcillium glaucum, 

 Lecture XIII. 



white. See Mucor, Lecture XII. 

 Mucor, Lecture XII., 91-96 (Fig. 17). 



a parasite, 95. 



a saprophyte, 95. 



anaerobic modification of, 96. 



asexual reproduction of, 94. 



chemotropism of, 92, 93. 

 coanocyte of, 91, 95. 



coenocytic gametes of, 95. 



columella of, 94. 



curvature of, 93. 



cytoplasm of, 91, 92. 



mycelium of, 91. 



nuclei of, 92, 94. 



nutrition of, 95. 



respiration of, 96. 



response to gravity of, 93. 



- light of, 93. 



sexual reproduction of, 94, 95. 



sporangiophore of, 94. 



sporangium of, 94. 



spores of, 94. 



zygospore of, 95. 

 Multicellular plants, 23, 76, 82. 

 Mutability of species, 274, 276. 



NATURAL selection, 277. 



Nitrates, 41, 49, 63, 64, 66, 67, 69, 78, 



85, 96, 107, 116, 142, 156. 

 Nitrifying bacteria, 63, 64. 

 Nitrogen, free, utilised by bacteria, 63. 



circulation of, 65, 66, 67. 



source of, for green plants, 49, 66. 

 sources of, for holozoic plants, 31, 49, 

 Nucellus, 206. [62. 



of Pinus, 206, 209. 



Ranunculus, 234. 



Scilla, 246. 



Nuclear fluid, 250, 251. 



division. See Mitosis. 



membrane, 250, 256. 



net-work, 250. 



plate, 253. 



thread, 251, 255. 

 Nucleinic acid, 251. 

 Nucleolus, 251, 253, 255. 



Nucleus contains the hereditary material 



(germ-plasm), in. 

 does not arise de novo, 250. 



granular in appearance, 251. 



of cell of epidermis of leaf of Trades- 



cantia virginiana, 3, 4, 6. 



resting, 250. 



Nutrition, holophytic and holozoic con- 

 trasted, 49, 62. 



OCEANIC Islands, 274. 



Oosperm, 89. 



Operculum, 140. [89, 120. 



Optical section, 6, 17, 23, 36, 47, 74, 83, 



Osmotic pressure, n, 12, 13, 14, 19. 



a compression member, 93, 99, 159. 



distends cells, 155, 156, 228. 

 of vacuole, 14, 93. 



Ovary, 233, 237, 246. 

 Ovules of Pinus, 205. 



Ranunculus, 233. 



Scilla, 246. 



Oxygen, evolution of, 41. 



PALISADE parenchyma of Aspidium, 155. 



of Ranunculus, 222. 

 Paraphyses, 137. 

 Parasitism of bacteria, 62. 



gametophyte, 177, 208, 210. 



Mucor, 95. 



sporophyte, 142, 143. 

 Parthenogenesis, in. 

 Passage-cells, 242. 

 Pasteur, 58, 101. 

 Pathogenic bacteria, 65. 

 Pectose, 253. 



Penicillium glaucum. Lecture XIII., 



asci, 101. [67-103 (Fig. 18). 



ascocarp, 101. 



ascogenous hyphae of, 100. 



ascospores, 101. 



asexual reproduction of, 99, 100. 



branches of, 99. 



chemotropism of, 99. 



coenocytes of, 97. 



conidium of, 99. 

 - enzymes of, 101. 



gametangia of, 100. 

 geotropism of, 99. 



hyphae of, 97. 



mycelium of, 97. 



nitrogen, source for, 102. 



nuclei of, 97. 

 nutrition of, 101. 



oil drops in, 97. 



omnivorous, 101. 



osmotic pressure in, 99. 

 respiration of, 103. 



rigidity of, 99. 



sexual reproduction, 100, 101. 



