3o8 



INDEX 



Haberlandt, on water secretion, 128; on light per- 

 ception, 251 ; on geotropic perception, 266, 267; 

 on Mimosa, 280. 



Habit, 245. 



Hahn, see BucKner, Buchner and H. 



Hales; Staticks, 123, 128, 129. 



Hall, Rothamsted experiments, 6g. 



Halliburton, Chemical physiology, 140. 



Halophytes, 17, 36. 



Hamar, 260. 



Hamburger, on osmotic pressure, etc., no. 



Hammarsten, Physiological chemistry, 140. 



Hansen, on acetic acid bacteria, 210; on yeast cul- 

 ture, etc., 42-44. 57, r8i, 185. 



Hanson; on phycoerythrin, 21. 



Hansteen, on protein formation, 165. 



Hanstein, on transfer of organic substances, 136. 



Harden and Norris, on reducing enzymes, 188; H. 

 and Young, on alcoholic fermentation, 182. 



Harrington, see Hibbard and H. 



Harris and Lawrence, on osmotic values of ex- 

 pressed juices, IIS- 



Hartig, on transpiration, 125 ; on ascent of sap, 131 ; 

 on asparagin and seed germination, 155. 



Hartley, see Berkeley and H. 



Haselhoff and Lindau, on smoke injury, 232. 



Hasselbring, on salt absorption and transpiration, 

 136, 241, 243. 



HatcHek, on colloids, 103. 



Haushof er, on microchemical analysis, 84. 



Hawkins, see Livingston and H. 



Hay bacillus and hay infusion, 270. 



Hazel 226, 228. 



Heat, xxii, is, 48, 180, 199, 200; liberated in respira- 

 tion, 198-200. 



Hedera, 246. 



Hegler, on strains as stimuli, 272, 273. 



Heine, on starch sheath, 137. 



Helianthus (see also sunflower), 34, 129. iSo, 169, 

 176, 286, 287, 298, 299. 



Heliophilous and heliophobous plants, 27. 



Heliotropism (see also phototropism) , 245. 



Helleborus, 258. 



HeUriegel and Wilfarth, on nitrogen assimilation, 

 71. 



Helmont, van, on sources of plant material, xxi; on 

 spontaneous generation, 50. 



Hematoporphyrin, 11-13. 



Hemicelluloses, 170, 171, 177. 



Hemin, 12. 



Hemoglobin, 7, n, 12. 



Hemopyrrol, 12. 



Hemp, 143, 144, 169, 273. 



Henius, see Wahl and H. 



Henri, see Cernovodeanu and H. 



Heracleum, 115. 



Heredity, xxv. 



Herlitzka, on colloidal chlorophyll, 11. 



Hettlinger, on protein formation and wounding, 

 165. 



Hexose, 31. 



Hibbard and Harrington, on freezing-points of 

 triturated tissues, 115. 



Rieracium, 249. 



Hiestand, on phosphatides, 168. (See also Winter- 

 stein and H.) 



Hilgard, Soils, 86. 



Hill, A. C, on reversible zymohydrolysis, 153. 



Hill, T. G., see Haas and H. 



Hiltner, see Nobbe and H.; Nobbe, Schmid, H. and 



Hotter. 

 Hinze, on sulphur bacteria, 49. 

 Hippuris, 220. 

 Histidin, 14s, 146, 160. 

 Histones, 147. 



Hbber, Physikalische Chemie der Zelle, no, 139. 

 Hocheder, see Willstatter and H. 

 Ho£f, Van't, Theoretical chemistry, 35; on osmotic 



pressure, 109, no. 

 Hoffman, on calamin violet, 81. 

 Hofmeister, on ascent of sap and bleeding, 129; on 



the cell, 139 ; 140, 280. 

 Hohnel, on gas in stems, 120, 132. 

 HSlle, on oil in Strelitzia, 29; on wilting, etc., 133. 

 Hop, 45, 252, 255, 276. 



Hoppe-Seyler, on fermentation in soils, etc., 178. 

 Hordein, 143. 1 



Hordeum (see also barley), 144, 149, 223. 

 Hormones, IS5. I73. 268, 292, 293, 299. 

 Horn, see Morse and H. 

 Horowitz, on pigments, 7. 

 Horse-chestnut, 19. 



Hotter, see Nobbe, Schmid, Hiltner and H. 

 Hoyer, on lipolytic enzymes, 151. 

 Hubbenet, see Kostychev and H. 

 Hug, see Willstatter and H. 

 Humidity, of air, and transpiration, 127, 233. 

 Humulus (see also hop), 252, 276. 

 Humus, 86, 92, 

 Hungerbiihler, on starch forniation and proteins 



in unripe potato tubers, 170. 

 Huni, see Willstatter and H. 

 Hydathodes, 127. 

 Hydnora, 45. 

 Hydrangea, 36, 81. 

 Hydrocharis, 150. 

 Hydrogel, 174. 

 Hydrogen, xxii, 14, 48, 49, 75, 97, 148, 174-176, 



179, 180, 187-190, 203-206, 211; acceptors of, 



204-206, peroxide, 56, 149, 152, 153, 203, 206; 



sulphide, 40, 46-49, 149, 162, 178, 211. 

 Hydrogenase, 153. 

 Hydrogenomonas, 49. 

 Hydrolysis (see also enzymes), 144, 149, 151, 157, 



174, 176, 198, 200. 

 Hydroquinone, 172, 205. 

 Hydrosol, 174. 

 Hydrotropism, 244. 

 Hydroxyl, 174. 

 Hydroxy-prolin, 145. 

 Hyponasty, 280. 

 Hypoxanthin, 147, 158, 160, 161, 162. 



I 



Illumination, one-sided, 245. 



Imbibition, in cell walls, 132, 134, 13s; in bladder 



membrane, 103. 

 Imidazol, 14s, 148. 

 Immunization, 167. 

 Impatiens, 128, 231. 

 Indican, 172. 



Indigo, 116, 172; indigo carmine, 5. 

 Indigotin, 172. 



