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Just Published, uitb 383 Illustrations. 8vo. $5.50. 



TEXT-BOOK OF COMPARATIVE ANATOMY, 



BY DR. ARNOLD LANG, 



PROFESSOR OF ZOOLOGY IN THE UNIVERSITY OF ZURICH ; FORMERLY 

 RITTER PROFESSOR OF PHYLOGENY IN THE UNIVERSITY OF JENA. 



I nth Preface to the English Translation 

 BY PROFESSOR DR. ERNST HAECKEL, F.R.S., 



DIRECTOR OF THE ZOOLOGICAL INSTITUTE IN JENA. 



Translated into English by 

 HENRY M. BERNARD, M.A. (CANTAB.), AND MATILDA BERNARD. 



^art I. 



Complete, with Index and 383 illustrations. Svo. $5.50. 



This translation of the first volume of Professor Lang's Lehrbuch der 

 Vergleichende Anatomic may be considered as a second edition of the 

 original work. Professor Lang kindly placed at our disposal his notes, 

 collected for the purposes of emendation and expansion, and they have 

 been duly incorporated in the text. From the Translator s Preface. 



Professor Lang has here successfully carried out the very difficult 

 task of selecting the most important results from the bewildering mass 

 of new material afforded by the extensive researches of the last decades, 

 and of combining them with great judgment. Besides this he has, more 

 than any former writer, utilized the comparative history of development 

 in explaining the structure of the animal body, and has endeavored 

 always to give the phylogenetic significance of ontogenetic facts. Lastly, 

 he has, by the clear systematic reviews of the various classes and orders 

 which precede the anatomical account of each race, further facili- 

 tated the phylogenetic comprehension of complicated morphological 

 problems, his wisely chosen and carefully executed illustrations assist- 

 ing materially in this result. It is therefore with great pleasure that I 

 commend this book to the English student, in the hope that the English 

 translation will promote to as great an extent as the German original the 

 wider study and better comprehension of animal morphology, and 

 will attract new students to this noble science. From Professor Haec- 

 keFs Preface. 



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