I20 Life and Love. 



or of one body to another; the most dehcate 

 psychic problems are involved. It is not enough 

 for one creature to be male and another female ; 

 there must be other sympathy between them to 

 draw them irresistibly together. There is now 

 choice exercised, principally on the part of the 

 female. It is no longer he who arrives first who 

 wins, but he who pleases best. 



Every structural development is now taken 

 advantage of by the male, whereby, he can hope to 

 arouse interest in the heart of his beloved. Find- 

 ing his wings developed in ridges which can be 

 made to sound by rubbing, he eagerly produces his 

 stridulating sounds, piercing the air with his eager 

 love-cries. Wherever his armor admits of sound 

 vibrations, he tmceasingly develops this musical 

 instrument by use. Where color is his form of 

 reproductive activity, he display's his brilliancy in 

 his most engaging manner. Where his ardor 

 breaks forth in weapons, he assures his beloved of 

 his devotion and fearlessness by engaging in gladi- 

 atorial combat for her diversion. And she, most 

 charmed by the most actively developed of her 

 adorers, selects the handsomest, the strongest, or 

 the bravest for her mate, thus preserving the high- 

 est standard for her race. 



In this way is the race modified, sexual selection, 

 as Darwin calls it, playing its part in conjunction 

 with natural selection. 



Although courtship among the insects is both 



