5i6 



DR BARCLAY, 8tC. 



than species, and with regard to species than to 

 genera, there is reason to believe that it is rather 

 limited from wisdom than from physical re- 

 sistance ; and hence are circumstances allowed to 

 operate to the injury, mutilation, and the destruc- 

 tion of numerous individuals, while their species, 

 notwithstanding, is regularly preserved ; in other 

 words, are permitted to operate only in propor- 

 tion to the more or less abundant supply of the 

 new individuals that are successively brought in- 

 to existence for continuing the species. 



