oftiw 



It Is incredi- 

 lilnrly. He vho is noi 



He win be ioned to 



of tiieonhrfoof ma to 



eoHlnietion'of hkekiill, 



OB tihe OHM pimn with that of othor 



~ <rf ^le on to whidi Uie ptfts 



be p^ tke nrrwinnil leappeemiee <tf Tarious 



of Kienl maadeB, which maa 



% bat wbidi are eomaioa to the 



wd of aaalogoaa m:Ib all point 



' to tte eondanoa iSbaX aiaa ie 



I oilier iHBMiiwIii of a eoauaon 



ia afl parta of bis body id in his mental 

 Tbcae differeaeeB cm* Tariatians seem to be 

 ladaeed \n tiie Baaie geaoal caaan, and to obe j the nine 

 w^ flbe lover aatmalw la both cases eimihu' laws 

 iaheri^aoe piefafl. Maa teads to increase at a greater 

 of sabastenee: consequently he is occa- 

 to a aerere etrnggle for existence, and 

 win bare eHected whatcTer lies within its 

 A aaeeeamm of strongly marked Tariations of a 

 aataie is br no means requisite: slight flnctaating 

 ia the indiTidnal saffice for the work of natural 

 aeleelioB; aoi Uiai we have aaj reason to suppose that in 

 Uie awae ^ec i cs afl parts of tins organization tend to vary 

 to the asaie degree. VTe maj feel assared that the inherited 

 eSeeti of the kyng-continued use or disuse of parts will 

 bare doae much in the same direction with natural selec- 

 tioB. Modifications formerly of importance, though no 

 kmga'of any special use. are long-inheriteri. Wbea~one 

 part in modified other parts change through the principle 

 of corrdatioB, of which we hare instances in many curious 

 eases of correlated monstooaties. Something may be 

 attribated to the direct and definite action of the surround- 

 iag eoaditioos of life^ such as abundant food, heat or 

 moutare; and^ hurtly, many characters of slight physio- 



