INDEX 



015 



Tumours, 367 

 Tunieata, 317 



UREA, 109, 162, 175, 305, 482 

 artificial synthesis of, 23, 43 

 derivation of, 162 



Uric acid, 109, 162, 175, 305, 482 

 derivation of, 162 



VACUOLES, 81 



contractile, 82, 166 



Vampyrella, food-selection by, 148, 527 

 Variability, individual, 185, 317 

 Vancheria, formation of globules by 



plotoplasm of, 94 

 Vermes, 317 

 Vertebrata, 317 

 Vie latent*. 132 



Vital conditions, diagram of, 350 

 Vital force, doctrine of, 17, 18, 20, 31, 



41, 123 

 Vitalism, mechanical, 44 



psychical, 45 

 Vitellins, 108 

 Volta, 263 

 Vorticella, as reflex arc, 578 



chemical stimulation of, 368 



food-ingestioii by, 145, 526 



Vorticella, mechanical stimulation of, 



384, 388 

 myoidof, 242 



WA< ) x ER'S hammer, 411 

 Warm-blooded animals, 217, 257 



heat-regulation in, 390 

 Warm stage, 392 



Water as constituent of living sub- 

 stance, 114 



as general vital condition, 279 



excretion of, 166, 174 

 Wheel-animalcules, desiccation of, 129 

 Wohler, 23 

 Wolff, 17 

 World-formula, du Bois-Reymond's, 32 



XANTHIN, 108, 109, 162, 175, 305, 482 



YAJURVEDA, 7 

 Yeast-cells, 111, 156 



action of temperature upon, 390 



narcosis of, 371 



production of heat by, 258 



See Saccharomyces 



Zoochlorellce, 84 

 ZoQxanthdlcK, 84 



Zygnema, behaviour of non-nucleated 

 pieces of, 513 



THE END 



RICHARD CLAY AND SONS, LIMITED LONDON AND V.rNi.AY, 



