284 



Practical Plant Biology. 



Heterospory in Selaginella, 178. 

 Heterozygote, 264. 

 Heterozygous, 264. 

 Holophytic nutrition, 49. 

 Holozoic nutrition, 49, 102. 

 Homologues, 168, 213, 272, 273. 

 Homozygotes, 266. 

 Hook, Robert, 84. 



Hunger stimulus and sexual reproduc- 

 tion, 40. 



Hydrolysis, 16, 28. 

 Hygroscopic curvatures of elaters, 132. 



peristomium, 141. 

 seta, 141. 



IMMORTALITY of Chlamydomonas, 72. 

 germ cells, 81. 



Spirogyra, 72. 



unicellular organisms, 82. 



Indusium, 161. 



Insect-pollination, 234, 237, 247. 

 Integument, 206. 

 of Pinus, 206. 



Ranunculus, 234. 

 Scilla, 248. 



Internal supports of tracheids and vessels, 



228. 



Invert sugar, 30, 34. 

 Invertase, 30, 34. 

 lodi, liquor, 8. 

 Isodiametrical cells, 105. 

 Isolation experiments. 274. 



KARYQKINESIS. 

 Koch, 58. 



See Mitosis. 



LACTIC acid, 65. 



Lactose, 65. 



Lamarck, 278. 



Land-flora, 121. 



Leaf-pigment, 46. 



Leguminous plants, nodules of, 67. 



tendrils of, 272. 



Levulose, a product of inversion, 30, 34. 



Life, 33. 



Light-stimulus and gemmae, 126. 



Ligule, 171, 205, 273. 



Linin, 251, 253. 



Lipase in Penicillium, 101. 



Lip-cells (stomium), 162. 



Lipoids, 16, 17. 



Liquor iodi, 8. 



Lock and key theory of enzyme action, 



102. 

 Loculus of ovary, 246. 



MAGNESIUM, essential element in proto- 

 phlasm, 16. 



in chlorophyll, 46. 

 Maltase, 50. 



Marchantia polymorpha. Lectures 

 XVI., XVII., 121-134 (Figs. 



22, 23, 24, 25). 



air-chambers of, 122, 124. 



alternation of generations in, 133 



(Fig. 30). 



antheridia of, 128. 



antheridiophore of, 128. 



archegoniophore of, 130. 

 archegonium of, 130. 



asexual reproduction of, 125, 126. 



cellular differentiation of, 125. 



cupules of, 126. 



death and reproduction of, 126. 



dehiscence of sporangium, 132. 



elaters of, 131. 

 embryo of, 131. 



fertilisation of, 130. 



foot of, 131. 

 gemmae of, 126. 



mid-rib, 122. 



oosperm of, 131. 



ova of, 130. 



photosynthetic cells of, 124. 



pits in cells of, 124. 



rhizoids of, 122, 124. 

 scales of, 122. 



sperm-cells of, 129. 



sporangium or spore-capsule of, 



131- 



spores of, 131. 



stalk of, 132. 



thallus of, 122. 



ventilating pores, 123. 

 Measurement, microscopic, 23. 

 Medullary rays, 186, 195, 197. 



secondary, 186. 

 Megaspores, 173. 



of Pinus, 206, 207, 211. 

 Ranunculus, 234, 235. 



Scilla, 248, 249. 



Selaginella, 173, 175. 



Membrane, semi-permeable, 14. 

 Memory, physiological, 39. 

 Mendel, 261, 278. 



Mesarch, 187. 



Mesophyll cells, supported by osmotic 

 pressure, 155. 



laboratories for synthesis, 157. 



of Aspidium, 155. 



Pinus, 181. 



Ranunculus, 222. 



- Scilla, 245. 

 Metabolism. 57, 64. 

 Microscope, measurement with, 23. 

 Microscope, parts of the, i, 2. 

 - use of, 3, 4, 5, 6, 7. 

 Micro-organisms, Lectures VII., VIII., 



and IX., 52-67. See Bacteria. 

 Micropyle, 206. 



