INDEX. 



487 



WEIGHTS. 



Weights, relative, of crossed and 

 self-fertilised plants, 244, 283; 

 and period of germination of 

 seeds, 352-355 



Wil.lcr, Mr., fertilisation of flowers 

 with their own pollen, 841 



Wilson, A. J., superior vigour of 

 crossed seedlings in Brassica 

 campestris ruta baga, 353; self- 

 fertility of wheat, 370, on size 

 of pollen-grains, 378 



Wistaria sinensis, 378, 430 



Y. 



Yucca moth, 421 



Zea mat/8, 16, 233 ; measurements, 

 16-18, 234 ; difference of height 

 between crossed and self-fertilised, 

 288 ; early flowering of crossed, 

 293; self-fertile, 369; prepotency 

 of other pollen, 3<J9 



