26 



The supposition is monstrous, and in direct 

 opposition to the inductive spirit of the sound- 

 est philosophy. If these opinions be true, it is 

 also expedient to publish them to the world ; 

 but if they are calculated to destroy the hopes 

 and happiness of mankind, to corrupt and de- 

 moralize society ; then their falsity is confessed 

 and apparent " by their fruits you may know 

 them." 



I remain, &c 



LETTER V. 



SIR, 



IN the first chapter of your " Natural His- 

 " tory of Man," you have very justly defined 

 the labours and subdivisions of those who culti- 

 vate the different departments of this science. 

 *" The anatomist and physiologist unfold the 

 " construction and uses of the corporeal me- 

 " chanism ; the surgeon and physician describe 

 " its disease; while the metaphysician and mo* 

 " ralist employ themselves with those functions 

 " which constitute the mind with the moral 



* P. 119, 



