PREFACE. XV 



Mr. Clilklren, of the British Museum, for his 

 kind assistance in revisino- the sheets while the 

 work was printing, and for liis many valuable 

 suggestions during its progress through the 

 press. 



A catalogue of the wood engravings has 

 been subjoined ; and also a tabular view of the 

 classification of animals adopted by Cuvier in 

 his " Regne Animal," with familiar examples 

 of animals included under each division ; both 

 of which I conceived might prove useful for 

 purposes of reference. The latter table is 

 reprinted from that which I have given in my 

 " Introductory Lecture on Human aud Com- 

 parative Physiology," published in 1826, with 

 only such alterations as were required to make 

 it correspond with the second and improved 

 edition of Cuvier's work. 



Bernard Street, Russell Square, 

 May 1, 1834. 



