VI PREFACE. 



anatomists to conform to this nomenclature, it seems clearly a duty to the 

 overworked medical students to adopt it. 



Excellent as the German nomenclature is, as a whole, it is not beyond 

 improvement, and it may be desirable for a committee of the Association 

 of American Anatomists to publish in their English forms a corresponding 

 list of names.* As few changes as possible should be made, but it is certain,, 

 for example, that the ventral surface of the body will not be called anterior, 

 or the dorsal surface posterior. In the following pages anterior always 

 means toward the head. Common general terms should be made even 

 more specific. For instance, it is questionable whetner follicle (Latin, a 

 small leather bag, a husk or shell) should be applied to anything other than 

 closed cysts like the follicles of the ovary and thyreoid gland. Its ap- 

 plication by the Germans to the sheath of the hair and by many Amer- 

 icans to solid nodules of lymphoid tissue may lead the student to wonder if 

 "follicle" is not a colloquial rather than a scientific term. 



The attention of all students should be called to the American Journal 

 of Anatomy, the quarterly publication of the Association of American 

 Anatomists, which contains the results of current American anatomical 

 and histological investigations. It probably affords the most satisfactory 

 means by which a physician may keep in touch with these sciences. 



The writer has many acknowledgments to make for help received. 

 Messrs. P. Blakiston's Son & Co., and Mr. William T. Oliver, the artist 

 who has drawn the more elaborate of the new figures, have rendered all the 

 assistance possible. Members of several departments at the Harvard 

 Medical School have given valuable advice, and Dr. G. H. Wright, As- 

 sistant in Dental Histology, has arranged a considerable portion of the 

 section on the teeth. It is a privilege to present for the first time in a text- 

 book, the discoveries of Dr. James H. Wright regarding the origin of blood 

 plates. His remarkable conclusion that they are fragments of pseudopodia 

 of the giant cells seems established beyond doubt by an examination of 

 his specimens. 



Finally it is a pleasure to record that after studying histology and em- 

 bryology under Professor Charles S. Minot, the writer has for several 

 years enjoyed the closest association with him in his scientific work. The 

 results of such unusual privilege should be found reflected in this edition 

 of Professor Stohr's Histology. 



FREDERIC T. LEWIS. 



Cambridge, Massachusetts, 

 September, 1906. 



* The writer has since been informed that Messrs. Blakiston's Son & Co. have in press 

 such a list prepared by Professor Barker and entitled "Anatomical Terminology." The 

 orderly arrangement of these descriptive names makes the Latin list and undoubtedly 

 their English version also an excellent means by which students may review anatomy. 



