INDEX. 



487 



WEI3HT3. 



Weights, relative, of crossed and 

 self-fertilised plants, 244. 283; 

 and period of germination of 

 seeds, 352-355 



Wilder, Mr., fertilisation of flowers 

 with their own pollen, 341 



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. 



Z3A. 



Yucca moth, 421 



Zea mays, 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, 399 



