INDEX 



239 



WALLACE on large and small vari- 

 ations, 63 - 



Warren, E.. on variations in Daphnia, 

 60 



Wasps, fossorial, transmission of in- 

 stincts in (Sphex and Ammo- 

 phita}, 145-8 



Weismann and Roux, theory of 

 hereditary substance, 9, 11 



Weismann's theory of evolution, 55 



Weismann on variations in Cypris, 60 



Willows, crosses between varieties of, 

 179 



Wilson on chromatin as bearer of 

 hereditary characters, 33 



Wilson, experiments on germinal 



localisation, 10 



theory of the determination of sex, 

 195-7, 201-2 



Xanthorohe, Meridelian experiments 

 with, 187 



YUCCA, adaptation to the moth Pro- 



nuba, 88 



Yung's experiments upon tadpoles, 

 192 



ZEBRA hybrid with horse, 128 

 Zoja, experiments on germinal 

 localisation, 10 



THE END 



Printed by BALLANTYNE, HANSON &-> Co. 

 Edinburgh 6* London 



