348 



INDEX 



Gunnera, 123 

 Guttation, 140 



H 



Haar, van der, on oxidases, etc., 170 



Haarst, van, see Pitsch and van H. 



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

 21, 31, 158, 160, 190 



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

 ception, 283; on geotropic perception, 298, 299; 

 on Mimosa, 318 



Habit, 277 



Hahn, see Buchner, Buchner and H. 



Hales, Staticks, 135, 140, 141 



Hall, Rothamsted experiments, 73 



Halliburton, Chemical physiology, 158 



Halophytes, 17, 37 



Hamar, 292 



Hamburger, on osmotic pressure, etc., 119 



Hammarsten, Physiological chemistry, 158 



Hansen, on acetic acid bacteria, 233; on yeast cul- 

 ture, etc., 45-47, 59, 204, 208 



Hanson, on phycoerythrin, 21 



Hansteen, on protein formation, 183 



Hanstein, on transfer of organic substances, 151 



Harden and Norris, on reducing enzymes, 211; H. 

 and Young, on alcoholic fermentation, 205 



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, 173 



Hartley, see Berkeley and H. 



Haselhoff and Lindau, on smoke injury, 264 



Hasselbring, on salt absorption and transpiration, 

 150, 273, 275 



Hatchek, on colloids, 111 



Haushofer, on microchemical analysis, 90 



Hawkins, see Livingston and H. 



Hay bacillus and hay infusion, 302 



Hazel, 258, 260 



Heat, xxxii, 16, 51, 203, 222, 223; liberated in res- 

 piration, 221-223 



Hedera, 278 



Hegler, on strains as stimuli, 304, 305 



Heine, on starch sheath, 152 



Helianthus (see also sunflower;, 34, 141, 168, 187, 

 194,326, 327.338 



Heliophilous and heliophobous plants, 27 



Heliotropism (see also phototropism) , 277 



Helleborus, 290 



Hellriegel and Wilfarth, on nitrogen assimilation. 75 



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

 on spontaneous generation, 53 



Hematoporphyrin, n-13 



Hemicelluloses, 188, 189, 195 



Hemin, 12 



Hemoglobin, 8, 12 



Hemopyrrol, 13 



Hemp, 161, 162, 187, 305 



Henius, see Wahl and H. 



Henri, see Cernovodeanu and H. 



Heracleum, 124 



Heredity, xxxv 



Herlitzka, on colloidal chlorophyll, 11 



Hettlinger, on protein formation and wounding, 



183 



Hexose, 31 



Hibbard and Harringron, on freezing-points of 

 triturated tissues, 124 



Hiestand, on phosphatides, 186. (See also Winter- 

 stein and H.) 



Hilgard, Soils, 92 



Hill, A. C, on reversible zymohydrolysis, 171 



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



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

 Hotter. 



Hinze, on sulphur bacteria, 52 



Hippuris, 251 



Histidin, 163, 164, 178 



Histones, 165 



Hober, Physikalische Chemie der Zelle, 119, 157 



Hocheder, see Willstatter and H. 



Hoff, Van't, Theoretical chemistry, 36, on osmotic 

 pressure, 117, 118 



Hoffman, on calamin violet, 87 



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

 the cell, 157, 158, 318 



Hohnel, on gas in stems, 132, 144 



Holle, on oil in Strelilzia, 30; on wilting, etc., 14s 



Hop, 48, 284, 287, 311 



Hoppe-Seyler, on fermentation in soils, etc., 201 



Hordein, 161 



Hordeum (see also barley) , 162, 167, 255 



Hormones, 173, 191. 300, 331, 332-333. 338 



Horn, see Morse and H. 



Horowitz, on pigments, 7 



Horse-chestnut, 20 



Hotter, see Nobbe, Schmid, Hiltner and H. 



Hoyer, on lipolytic enzymes, 169 



Hseracium, 281 



Hubbenet, see Kostychev and H. 



Hug, see Willstatter and H. 



Humidity, of air, and transpiration, 139, 265 



Humulus (see also hop), 284 313 



Humus, 92, 98 



Hungerbuhler, on starch formation and proteins 

 in unripe potato tubers, 188 



Huni, see Willstatter and H. 



Hutchins, oxygen-supplying power of soil, 102 



H. and Livingston, oxygen-supplying power of soil, 

 102 



Hydathodes, 139 



Hydnora, 48 



Hydrangea, 37, 87 



Hydrocharis, 168 



Hydrogel, 192 



Hydrogen, xxxii, 14, 50, 5L 5^, 79. 105. 166. 192-194. 

 202, 210-213, 226-229, 234; acceptors of, 227- 

 229; peroxide, 59, 167, 170, 171. 226, 229; sul- 

 phide, 43, 49, 50, 167, 180, 201, 234 



Hydrogenase, 171 



Hydrogenomonas, 52 



Hydrolysis (see also enzymes), 162, 167, 169, 175. 

 192, 194, 221, 223 



Hydroquinone, 190, 228 



Hydrosol, 192 



Hydrotropism, 276 



Hydroxyl, 192 



Hydroxy-prolin, 163 



Hyponasty, 318 



Hypoxanthin, 165, 176, 178, 179. 180 



