INSTINCT 393 



such instincts as the young cuckoo ejecting its foster- 

 brothers — ants making slaves — the larvae of ichneumonidae 

 feeding within the live bodies of caterpillars — not as 

 specially endowed or created instincts, but as small con- 

 sequences of one general law leading to the advancement 

 of all organic beings — namely, multiply, vary, let the 

 strongest live and the weakest die. 



END OP VOL, I. OP "the ORIGIN OP SPECIES" 



