278 



PROBLEMS OF FERTILIZATION 



Virchow, R., 17 

 Viscosity of egg, 153 



Wagner, 12, 18, 19 

 Waldeyer, O., 139 

 Waldstein, 185 

 Warburg, O., 145, 242 

 Wastenys, H., 145 

 Weismann, A., 38, 40 

 Whitman, C. O., 185 



Wierzejsky, A., 56 



Wilson, E. B., 25, 49, 60, 61, 64, 



140, 158, 162, 163, 233, 244, 265 

 Winkler, H., 133 

 Woodruff, L. L., 39, 238 

 Woodward, A. E., 27, 120, 121 



231, 238, 239, 240 



Ziegler, H. E., 158 

 Zygote, 31 



PRINTED IN THE U.S.A. 



