THE CLOVERS 



173 



Effect on clover seed of Stages in development of red-clover 

 the chalcis fly. seed: (a) flower; (b) immature 



seed vessel; (c) flower ripe; (d) ma- 

 ture seed vessel ; (e) seed. 



Second crop of red clover nearly ready to cut for seed. The 

 first crop yielded 21 tons to the acre. 



