INDEX 



171 



Tumors, 92. 

 Tunicate, 87, 142. 

 Turbellarians, 93. 

 Typhoid, 143. 

 Tyrosin, 14, 22, 107. 



Urates, 85. 

 Urea, 22, 34, 50. 



blood, 56. 



elimination in rabbits, 56. 



elimination in pregnancy, S 



in culture media, 34, 35. 

 Uric acid, 76, 78. 



concretions, 80. 



Vacuole, 74, 78. 

 Vacuoloids, 85, 86. 

 Van der Stricht, 19. 

 Variations, 



chemical, 70. 



developmental, 122. 



evolutionary, 119, 138. 



factors of, 116. 



hereditary, 119, 129, 138. 



in animals, 139. 



in behavior, 45, 50. 



in plants, 139. 



morphologic, 76, 80, 93. 



physiologic, 70. 



seasonal, 71. 



staining, 50. 

 Varieties, 70. 

 Vegetative stage, 71. 

 Venom, 22. 

 Verworn, 10, 87. 

 Vitalism, 6. 

 Viruses, filterable, 144. 

 Viscosity, 142. 

 Vital relationships, 59, 61. 

 Vitellus, 19, 22. 



Vogt, 78. 



de Vries, 117, 123. 



Wallin, 12, 16, 17, 24, 45, 64, 90. 



Wax gland, 42. 



Weather, 144. 



Weber, 71. 



Weismann, 124. 



Wesenberg-Lund, 71. 



Wigand, 55. 



Williams, E. C. P., 56. 



Williams, J. W., 55. 



Wilson, 12, 40, 115, 118, 120, 133. 



Wind, 144. 



Wing formation, 146. 



Winkler, 55. 



Winogradsky, 90. 



Wolbach, 29, 83, 101. 



Wood louse, 86. 



Wood tick, 83. 



Worms, 67. 



annelid, 77. 



dew, 77. 



turbellarian, 75. 

 Wright, 95. 



Xanthin, 78. 

 Xanthoproteic reaction, 16. 



Yeast, 



parasitic, 80. 



symbiotic, 81. 

 Yolk, 22, 74, 80. 



Zoobothrium pellucidum, 78. 

 Zoochlorellae, 68, 72, 74. 

 Zooxanthellae, 68,^71, 72. 

 Zymogen, 16, 22, 140. 

 Zirpolo, 101. 



