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PW - !S di '"PREFACE 'f 



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TO THE FIFTH EDITION 



SINCE the publication of the early editions of this 

 tract, the habits and manners of animals have 

 become a subject, in Natural History, of peculiar 

 interest, from the discoveries of Drs. Gall and Spurz- 

 heim of Vienna, respecting the connection found to 

 exist between the shape of the cranium and the in- 

 stinctive propensities of the animal. The head of a 

 swallow in this respect corresponds With the cha- 

 racter of migratory bird. All the species which I 

 have examined are endowed with an organization 

 which, from analogy, we should infer as being 

 capable of giving it a great power of local know- 

 ledge. It would be impossible in a few sheets to 

 enter into the detail of this extensive and intricate 

 subject; but the reader may consult the works 

 written by Gall and Spurzheim jointly, and published 

 at Paris, or the " Physiognomical System" of Dr. 



