304 Darwinism and Other Essays. 



yielding faith to unscientific fallacies like those 

 embodied in homoeopathy, or to wretched delu 

 sions like cranioscopic phrenology. 



It is therefore recommended that the time re 

 quired for the study of chemistry be limited to 

 one terra, instead of extending over three ; that 

 in the second term, along with the botany now 

 taught, some instruction be given in general and 

 comparative anatomy ; to be followed, in the 

 third, by a brief but comprehensive survey of 

 physiology ; while such knowledge of geology as 

 is needful for the better understanding of these 

 subjects might be simultaneously imparted by 

 means of lectures. An arrangement of this sort 

 would possess the signal advantage of throwing 

 the organic sciences into their proper place, bev 

 tween chemistry, upon which they partially de 

 pend, and psychology, to which they constitute 

 the natural introduction. 



There is the less need for insisting upon the 

 value of psychology, metaphysics, and logic, as 

 instruments of mental discipline, since few per 

 sons are disposed to call it in question. In fol 

 lowing a difficult metaphysical discussion, all the 

 intellectual faculties are brought into healthful 

 activity ; and although men may reason well 

 without understanding the nature of the psychi- 



