PEEFACE. Xlll 



which has occupied him for more than three years, 

 lias prevented him from quoting some authors, 

 whose publications are already known to the pu- 

 blic. The Chapters, for example, on the Organs 

 of Perception, and the Faculties of the Mind, 

 were prepared for the press several months be- 

 fore the publication of the " Physiology of the 

 Mind" by the late Dr BROWN. Had this not been 

 the case, the author would have availed himself of 

 several acute remarks of that discriminating philo- 

 sopher. Should the reader detect the slightest co- 

 incidence of opinion in the two publications, it can 

 only be attributed to the analytical operations ha- 

 ving been performed on similar subjects. Another 

 work has appeared more recently, which the au- 

 thor regrets was not before him in the whole 

 course of his enquiries. He refers to Dr BAR- 

 CLAY'S Treatise on Life and Organization. It 

 should be perused with care by every student of 

 Anatomy and Natural History, as an effectual pre- 

 servative against the doctrines of Materialism, and 

 deserves a place as well in the library of the Divine 

 as in that of the Physiologist. 



In the distribution of the subjects of the follow- 

 ing work, it was considered more useful to classify 



