MARRIAGE AMONG THE CLOVERS 115 



insects are mainly guided by sight and colour ; 

 they flit straight from one flower to another of the 

 same species ; and their heads are exactly adapted 



NO. 12. STRAWBERRY CLOVER, WITH FERTILISING BEE. 



to the shape of the flowers, which in turn have 

 modelled their tubes and organs on purpose to fit 

 them. Ants and creeping insects, on the contrary, 

 are attracted merely by the sense of smell : they 



