Cxmfmfs, xi 



XIII. 



PACK 



CRITICISMS ON "THE ORIGIN OF SPECIES." (The Natural History 

 Review, 1864) 299 



XIV. 



ON DESCARTES' " DISCOURSE TOUCHING THE METHOD or USING ONE'S 

 REASON RIGHTLY AND OF SEEKING SCIENTIFIC TRUTH." (An 

 Address to the Cambridge Young Men's Christian Society, delivered 

 on the 24th of March, 1870, and subsequently published in 

 Macmillan's Magazine) .... . 320 





