IV PREFACE 



the work here given the first tirne he goes over it. The dis- 

 section of the muscles and of the cranial nerves should only be 

 attempted if time remain after the other work is completed. 



In preparing this first part I have received very valuable 

 assistance from Dr. Hartog, Demonstrator of Biology in the 

 College, and from my friend and pupil Mr. 0. H. Hurst. I am 

 also much indebted to Prof. Gamgee and to Mr. Waters for the 

 important help they have given me in the histological portions. 



Owens College, 



August, 1882. 



