250 



OSCAR RIDDLE 



TABLE 9 

 Clutches of greatest size disparity laid by St. alba and by Turtur orientalis 



Hatched 

 Hatched 



Lost 

 3 da. 

 embr. 



1.485 

 2.486 



Infertile 

 Hatched 



Hatched 

 Hatched 



1.276 

 1.503 



+ 17.8 



TABLE 12 

 Size disparity of eggs of common pigeons 



^ It is quite probable that this figure was copied wrong when the weighing was 

 made, and should be 2.760. 



