330 



INDEX 



Water, absorption of, in growth, 15 ; 

 withdrawn in membrane forma- 

 tion, 42 ; by osmotic pressure, 88. 



Weights of English artisans, 21 

 (fig.) ; increase during growth, 14, 

 15 ; of male Belgians, 16 (tab.). 



Weismann, A., 59. 



Wetzel, G., 62, 81. 



Whitney, D. D., 84. 



Wilson, E. B., 45, 66, 67, 73, 94. 



Woodruff, L., 18, 19. 



Yatsu, N., 66, 72, 73, 76. 



Yolk, in centrifuged eggs, 80 ; glo- 

 bules, 11 ; granules, redistribution 

 of inverted eggs, 62 ; influence on 

 segmentation, 8, 58 ; nucleus, 20, 

 24, 46, 98; plug, 9, 62; pole or 

 vegetative pole, 7. 



