152 EVOLUTION 



varieties, which suggests tlmt. 



STRUGGLE FOR EXISTENCE. The term 

 " struggle fpr exjgtfflifle" is used in a large 

 and metaphorical sense, including depend- 

 upon ^jo^r, flnd em- 



bracing (which js_more important") not only 

 lifp af ||]p ipcjiyjjdiiaJL hut success^jll, 

 .progeny. From the high (geo- 

 metrical) rate of increase of all organic be- 

 ings (even the slow breeders requiring only 

 a few more years to people a whole district) 

 struggle in,e\dt,aj^ly follows, either one in- 



with Ibf^ individi-iaU of n 



It is 



the doctrine of Malthus applied with mani- 

 fold force to the entire animal and vegetable 

 kingdoms, for in this case there can be no 

 artificial increase of food and no prudential 

 restraints from marriage. 

 t.p 



nr yrm^^ g,nfTT]f|.ls jcrpnPrnll^ n TT ffnr mnnt.. 



QTir l P^M.,u^ n nfl.Y f^S. t?^f^ nfi f s ' both from 

 germinating on ground already occupied and 

 from animals. The amoi,}ftt_ of fo^4r*vof 



qffiirgg. gives th^ ftYtrerne IHit^f nirnhfrr 



very frequently, however, the check is 

 given by the attacks of enemies, jas 



o limate lay an 



