12 THE EVOLUTIONIST AT LARGE. 



Now, in the dog or the horse sight and 

 smell are equally developed ; so that they 

 probably think of most things about equally 

 in terms of each. In ourselves, sight is highly 

 developed, and smell is a mere relic ; so that 

 we think of most things in terms of sight 

 alone, and only rarely, as with a rose or a 

 lily, in terms of both. But in ants, on the 

 contrary, smell is highly developed and sight 

 a mere relic ; so that they probably think of 

 most things as smellable only, and very little 

 as visible in form or colour. Dr. Bastian has 

 shown that bees and butterflies are largely 

 guided by scent ; and though he is certainly 

 wrong in supposing that sight has little to do 

 with leading them to flowers (for if you cut 

 off the bright-coloured corolla they will never 

 discover the mutilated blossoms, even when 

 they visit others on the same plant), yet the 

 mere fact that so many flowers are scented is 

 by itself enough to show that perfume has a 

 great deal to do with the matter. In wing- 

 less ants, while the eyes have undergone 



