28 4 



INDEX 



Hydrogen ions, poisonous action of, 272. 



Hydrostatic pressure, influence of stretching 

 of cell on, 59. 



Hydroxyl, poisonous action of, 272. 



Hy drums, cause of resting period of, 212 ; 

 H. foetidtis, temperature limits for 

 growth of, 76 ; maximum temperature 

 for growth of, 78. 



Hymenium, influence of light on develop- 

 ment of, 94. 



Hymenomycetes, influence of light on, 90. 



Hypocotyl, shortening of, 14. 



Hypocotyls, influence of darkness on, 86. 



Hyponasty, definition of, 73. 



Hypotrophy, induction of, no. 



Ice, formation of, in plants, 239. 



Ice-formation, influence of, 244-6. 



Idioplasm, 146. 



Imbibition, importance of, in growth, 25, 

 26 ; influence of, on .freezing - point. 

 243, 244 ; pressure on, 26. 



Immortality, 223, 224. 



Impatiens, cell-divisions in, 42 ; on stretch- 

 ing of cell- walls in fruit of, 57 ; /. 

 Balsamina, minimal temperature for, 

 232 ; 7. Sultani, leaf-fall in, 218. 



Induction, labile, instances of, 140. 



Ingenhousz, 107. 



Injuries, influence of, on periodicity, 209. 



Intercalary growing zones, 9, 10, 12, Fig. 5; 

 protection of, 12. 



Internodes, origin of unequal length of, 7. 



Intussusception, 25, 29, 30 ; energy of 

 growth by, 27 ; in starch-grains, 35, 36. 



Inulin, influence of, on zoospore formation, 

 118. 



Ions, poisonous action of, 272-4 ; trans- 

 mission of stimuli by, 182. 



Iris florentina, resistance of, to heat, 231. 



Irmisch, 140. 



Iron, dissociation and poisonous action of, 



273- 

 Irritability, changes of, during development, 



137- 



Ischia, bacteria in hot springs of, 77. 

 Isoetes hystriX) resistance of, to desiccation, 



254. 



Isotropic, definition of, 73. 

 Ivy, dorsiventrality of radial cuttings of, 152. 

 Iwanowski, 174. 



Jaccard, 114; on influence of oxygen pres- 

 sure on growth, 115. 



Jacobi, 264. 



Jager, 260. 



Jahn, 123, 206. 



Janczewski, 87. 



Janse, 10, 156. 



Java, periodicity of plants in, 212, 214; 

 rapidity of growth in, 16. 



Jensen, 113. 



Jentys, 114. 



Jonsson, 93, 215, 253. 

 Jorgensen, 80, 84, 116, 117, 226. 

 Johannsen, on shortening of resting period, 



209. 



Johnson, 64. 

 Johow, 67. 

 Jost, 13, 14, 83, 86, 93, 99, 100, 144, 166, 



^209, 210, 215, 216 ; on etiolation, 9. 

 Junker, 122. 

 Junghuhn, 213. 

 Jungner, 128. 

 Just, 84, 226, 227, 229, 252 ; on resistance 



of submerged seeds to heat, 228. 



Kahlenberg and True, 260 ; on dissociation 

 and poisonous action, 272-4. 



Kaiser, 66. 



Kammerling, 88. 



Karsten, 119, 122, 140, 236, 257. 



Karyokinesis, 148 ; induction of, by stimu- 

 lation, 43. 



Kayser, 226, 229. 



Kedzior, 84. 



Keller, 122. 



Kerner, 58, 81,100, 128, 197, 206, 212, 230. 



and Oliver, 230, 231. 



Kienitz, 211 ; on resting periods of seeds, 

 208. 



Kihlmann, 237. 



Kinzel, 81, 208, 252. 



Kirchner, 79, 84, 201 ; on cardinal tempera- 

 tures for growth, 76. 



Kitao, 67. 



Kjellmann, 77. 



Klebahn, 41, 191, 198. 



Klebs, 10, 29, 32, 33, 34, 39, 43, 80, 82, 84, 

 90, 91, 98, 100, 102, 103, 104, 113, 116, 

 118, 119, 121, 123, 147, 164, 167, 177, 

 197, 208, 210, 257, 262 ; on apposition, 

 30 ; on cardinal temperatures for 

 growth, 76 ; on culture of Saprolegnia^ 

 199 ; on influence of oxygen on repro- 

 duction of fungi, 117; on life-cycles 

 of algae, 198 ; on resting period of 

 spores, 208. 



Klein, 90, 97 ; on influence of coloured 

 light on spore-formation, 102. 



Klemm, 53, 90, 94, 151, 156, 168, 239, 246, 

 248, 267, 268. 



Klocker and Schionning, 193. 



Knight, 88, 161, 162, 164,210; on grafting, 

 176 ; on influence of strains on growth 

 in thickness, 128. 



Knop's nutrient solution, influence of, on 

 zoospore formation, 118. 



Kny, 31, 94, 96, 109, 134, 135, 145, 150, 

 I53> !57 1 S%> l6 9, 178,215; enplanes 

 of cell-division, 42 ; reversal experi- 

 ments of, 159. 



Kobert, 258, 262, 263. 



Koch, 15, 168, 220, 226, 250, 256. 



Koppen, 8 1, 212; on growth at varying 

 temperatures, 76, 77. 



