EDITOR'S PREFACE TO THE FIRST 

 EDITION. 



THE " Text-book of Histology " by Bohm and v. Davidoff, as stated 

 by the authors in the preface to the first edition, presents as fully as 

 possible, from both the theoretic and technical standpoints, the subject- 

 matter of the lectures and courses in histology given to students in the 

 University of Munich. The authors further state that in the completion 

 of their work they had the constant aid and advice of Professor von 

 Kupffer, and had at their disposal the sections in the collection of the 

 histologic laboratory in Munich, which were freely used in the selection 

 and preparation of the illustrations accompanying the text. 



The excellence of the text and illustrations of the German edition, 

 attested by all familiar with the work, and the cordial reception which it 

 has received from both students and investigators, justify the belief that 

 an English translation will meet with approval from American and 

 English teachers and students. 



In the preparation of this American edition the editor has retained 

 substantially all the subject-matter and illustrations of the second German 

 edition, although certain minor changes in the arrangement of the text 

 seemed desirable. Additions to the German text have been freely made. 

 The sections on the Motor and Sensory Nerve-endings and on the Spinal 

 and Sympathetic Ganglia have been greatly expanded, and the Innerva- 

 tion of Glands and Organs has been considered much more fully than in 

 the original. Our knowledge of the normal function of tissues and 

 organs is so dependent on a correct understanding of their innervation 

 that this subject seemed deserving of fuller consideration than is generally 

 given it in text-books of this scope. The glands with internal secretion 

 have also been considered more fully than in the original text, their im- 

 portance necessitating such treatment. More than one hundred illustra- 

 tions, the majority of them from original drawings, have also been added. 

 In making these and other minor additions the editor has striven to 

 stamp his own work with the excellent features of the German text, and 

 trusts that his endeavors may have added to the usefulness of the book. 



The editor acknowledges with pleasure his indebtedness to Dr. 

 Herbert H. Gushing for his excellent and accurate translation, and for 

 suggestions received from him. The publishers, Messrs. Saunders & 

 Company, have shown throughout the greatest interest in the work, and 

 deserve the gratitude of the editor for their ready acquiescence in all 

 suggestions made by him, for the excellent reproduction of his drawings, 

 and for the suggestions made to him. The editor is particularly in- 

 debted to his able assistant, Dr. Lydia M. De Witt, for valuable assistance 

 rendered, more especially in the tedious work of proof-correction, for 

 which he expresses his sincere appreciation and gratitude. 



G. CARL HUBER. 



UNIVERSITY OF MICHIGAN, ANN ARBOR, MICH. 



