EDITOR'S PREFACE TO THE SECOND 



EDITION. 



The favorable reception accorded to the first American edition of 

 Bohm and Davidoff's Text-book of Histology has justified the as- 

 sumption expressed by the editor in his preface to the former edition, 

 that an English translation of this work would meet with approval 

 from American and English teachers and students. 



In the preparation of this second American edition the editor 

 has retained in general the same arrangement of the subject-matter 

 as presented in the former edition. The revision of the text has 

 given opportunity to take cognizance of the many contributions to 

 our knowledge of the ultimate structure of tissues and organs and 

 of their histogenesis which have appeared in recent years, and in 

 doing so, many of the chapters, especially those dealing with gen- 

 eral histology, have been subjected to extensive alterations. Re- 

 cognition has also been given to the results obtained by the use of 

 precise methods of plastic reproduction, methods which have been 

 especially useful in giving clearer and more accurate conceptions of 

 the form and relationship of anatomic structures, too small and too 

 delicate to admit of disassociation by means of methods of macera- 

 tion and teasing and too complicated to admit of full interpretation 

 by means of sections. Maziarski's observations on the form and 

 relationship of the ultimate divisions of the tubular systems of many 

 of the more important glands have been embodied, also the results 

 of numerous reconstructions made in the Histological Laboratory 

 of the University of Michigan. 



The text of this edition has been extended by some forty pages, 

 and the illustrations have been increased from three hundred and 

 fifty-one to three hundred, and seventy-seven. Recognizing the 

 fact that a text-book of Histology is a book which of necessity 

 needs to be constantly used in the laboratory, and its size is, 

 therefore, a matter of some importance, the editor seemed justi- 

 fied, in view of the fact that an increase in the number of text-pages 

 seemed inevitable, to dispense in the present edition with the list of 

 references to the literature (some twenty pages) which appeared in 

 the former edition. 



G. CARL HUBER. 



LABORATORY OF HISTOLOGY AND EMBRYOLOGY, 

 UNIVERSITY OF MICHIGAN. 



