348 



INDEX 



Haas and Hill, Chemistry of plant products, 6, 19, 



21. 30, 155, 157. 187 

 Haberlandt, on water secretion, 140; on light per- 

 ception, 281; on geotropic perception, 296, 297; 

 on Mimosa, 316 

 Habit, 275 



Hahn, see Buchner, Buchner and H. 

 Hales, Staticks, 135, 140, 141 

 Hall, Rothamsted experiments, 73 

 Halliburton, Chemical physiology, 155 

 Halophytes, 17, 36 

 Hamar, 290 



Hamburger, on osmotic pressure, etc., 119 



Hammarsten, Physiological chemistry, 155 



Hansen, on acetic acid bacteria, 230; on yeast cul- 

 ture, etc., 44-46, 59, 201, 205 



Hanson, on phycoerythrin, 21 



Hansteen, on protein formation, 180 



Hanstein, on transfer of organic substances, 148 



Harden and Nonis, on reducing enzymes, 208; H. 

 and Young, on alcoholic fermentation, 202 



Harrington, see Hibbard and H. 



Harris and Lawrence, on osmotic values of ex- 

 pressed juices, 124 



Hartig, on transpiration, 137; on ascent of sap, 143; 

 on asparagin and seed germination, 170 



Hartley, see Berkeley and H. 



Haselhoff and Lindau, on smoke injury, 262 



Hasselbring, on salt absorption and transpiration, 

 148, 271, 273 



Hatchek, on colloids, m 



Haushofer, on microchemical analysis, 90 



Hawkins, see Livingston and H. 



Hay bacillus and hay infusion, 300 



Hazel, 256, 258 



Heat, xxviii, 15, 50, 200, 219, 220; liberated in res- 

 piration, 218-220 



Hedera, 276 



Hegler, on strains as stimuli, 302, 303 



Heine, on starch sheath, 149 



Helianthus (see also sunflower), 34, 141, 165, 184, 

 191, 324, 325, 336 



Heliophilous and heliophobous plants, 27 



Heliotropism (see also phototropism), 275 



Helleborus, 288 



Hellriegel and Wilfarth, on nitrogen assimilation, 75 



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

 spontaneous generation, 52 



Hematoporphyrin, 11- 13 



Hemicelluloses, 185, 186, 192 



Hemin, 12 



Hemoglobin, 7, 11, 12 



Hemopyrrol, 12 



Hemp, 158, 159, 184. 303 



Henius, see Wahl and H. 



Henri, see Cernovodeanu and H. 



Heracleum, 124 



Heredity, xxxi 



Herlitzka, on colloidal chlorophyll, 11 



Hettlinger, on protein formation and wounding, 

 180 



Hexose. 31 



Hibbard and Harrington, on freezing-points of 

 triturated tissues, 124 



Hseracium, 279 



Hiestand, on phosphatides, 183. (See also Winter- 

 stein and H.) 



Hilgard, Soils, 92 



Hill, A. C, on reversible zymohydrolysis, 168 



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



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

 Hotter. 



Hinze, on sulphur bacteria, 51 



Hippuris, 249 



Histidin, 160, 161, 175 



Histones, 162 



Hober, Physikalische Chemie der Zelle, 119, 154 



Hocheder, see Willstatter and H. 



Hoff, Van't, Theoretical chemistry, 35; on osmotic 

 pressure, 117, 118 



Hoffman, on calamin violet, 87 



Hofmeister, on ascent of sap and bleeding, 141; on 

 the cell, 154. 155. 316 



Hohnel, on gas in stems, 132, 144 



Holle, on oil in Strelitzia, 29; on wilting, etc., 145 



Hop, 46, 282, 285, 311 



Hoppe-Seyler, on fermentation in soils, etc., 198 



Hordein, 158 



Hordeum (see also barley), 159, 164, 253 



Hormones, 170, 188, 298, 329, 330-331. 336 



Horn, see Morse and H. 



Horowitz, on pigments, 7 



Horse-chestnut, 19 



Hotter, see Nobbe, Schmid, Hiltner and H. 



Hoyer, on lipolytic enzymes, 166 



Hubbenet, see Kostychev and H. 



Hug, see Willstatter and H. 



Humidity, of air, and transpiration, 139, 263 



Hamulus (see also hop), 282, 311 



Humus, 93, 98 



Hungerbuhler, on starch formation and proteins 



in unripe potato tubers, 185 

 Huni, see Willstatter and H. 

 Hydathodes, 139 

 Hydnora, 47 

 Hydrangea, 36, 87 

 Hydrocharis, 165 

 Hydrogel, 189 



Hydrogen, xxviii, 14, 49, 50, 51, 79, 105, 163, 

 189-191, 199, 200, 207-210, 223-226, 231; 

 acceptors of, 224-226; peroxide, 58, 164, 167, 

 168, 223, 226; sulphide, 42, 48-49, 164, 177, 198, 

 231 

 Hydrogenase, 168 

 Hydrogenomonas, 51 

 Hydrolysis (see also enzymes), 159, 164, 166, 172, 



189, 191, 218, 220 

 Hydroquinone, 187, 225 

 Hydrosol, 189 

 Hydrotropism, 274 

 Hydroxyl, 189 

 Hydroxy-prolin, 160 

 Hyponasty, 316 

 Hypoxanthin, 162, 173, 175, 176, 177 



Illumination, one-sided, 275 



Imbibition, in cell walls, 144, 146, 147; in bladder 



membrane, 11 1 

 Imidazol, 160, 163 

 Immunization, 182 

 Impatiens, 140, 261 

 Indican, 187 



