360 



INDEX 



Work, of plants, 198, 220 



Wortmann, on respiration, 201; on growth, 244; in 



root hairs, 270; on yeast in grape juice, 201, 202 

 Wottschal, see Votchal. 

 Wounding, traction and pressure influencing 



growth, 300-305; wounding and metabolism, 



143, 180, 182, 213, 226; and responses, 298, 299, 



300 

 Wulfert, on determination of nitrates, 178 



X 



Yegunov, on sulphur bacteria, 

 Young, see Harden and Y. 



49 



Xanthin, 162, 173. I75-I77 

 Xanthophyll, 6, 20 

 Xanthoproteic reaction, 156 

 Xerophytes, 263 

 Xylem, 142, 143, 150 

 Xylose, 186 



Yarrow (see also Achillea), 276 



Yeast (see also Saccharomyces), 42, 43, 46, 79, 162, 



165, 167, 169, 170, 201, 20s, 208, 259, 331; 



Mucor yeast, 260, 261 

 Yegounow, see Yegunov. 



Zaleski, see Zaliesskii. 



Zaliesskii, on phosphoproteins, 162; on respiration, 

 168; on nucleo-proteins, 173; on protein forma- 

 tion, 178, 180, 181; in seeds, 174; on protein de- 

 composition, 174; on phosphorus compounds in 

 seeds, and on phosphoproteins, 174; on sprout- 

 ing of onion bulbs, 179; on ether and transfer of 

 substances, 180; on ammonia formation, 174, 

 180, 181; on nucleic acid in germinating seeds, 

 181; on carboxylase, 206; on stimulation of re- 

 spiration, 213; Z. and Reinhardt, on respiration 

 and salts, 214. (See also Nentskii and Z.) 



Zdobnicky, see Stoklasa and Z. 



Zea (see also maize), 159, 184, 253 



Zein, 158 



Zimmermann, on microtechnic, 90 



Zinc, 82, 87, 121, 163; chloride, 112, sulphate, 46. 121 



Zoospores, 331, 332 



Zygnema, 120 



Zygomorphic flowers, 295 



Zymase, 163, 167, 169. 202, 224, 226 



Zymin, 167, 169, 204 



