PREFACE. ix 



to consult some of the many works referred to in the 

 Descriptions of the Preparations and in the Descriptions 

 of the Plates ; but the bibliographical references have 

 been added with a view rather to the wants indicated 

 in the words ' Ftir Akademische Vorlesungen und zum 

 Selbstudium,' so often prefixed to German works on 

 science, than to those of the commencing student. A 

 local reason for giving development to the bibliographical 

 portion of this work lay in the fact, that through the 

 well-advised liberality of the Radcliffe Trustees, one of 

 the best of existing scientific Libraries had been trans- 

 ferred to the University Museum ; and much of what- 

 ever value this volume may possess is to be ascribed 

 to the happy arrangement in the way of concentration, 

 whereby that magnificent collection of books has been 

 placed under the same roof, with so much other scien- 

 tific apparatus of a non-literary kind. 



Nine of the twelve plates described in the third part 

 of this book, were drawn from nature by Mr. George 

 Crozier, formerly draughtsman to the Radcliffe Library. 



The fifty specimens described in the second part were 

 prepared by Charles Robertson, Esq., Demonstrator of 

 Anatomy in the University Museum ; and the greater 

 part of them were exhibited by him as a ' Zoological 

 Series with Dissections in Illustration,' in the Educa- 

 tional Department of the Exhibition of 1862. I have 

 to thank him for other assistance rendered in the course 

 of bringing this book to completion. 



To the biological teachings of Professor Huxley I 

 owe a larger debt than even my numerous references 



