PREFACE. 



THIS manual is written in the interest of element- 

 ary students. The fundamental facts in histology 

 have therefore been presented in as clear and 

 concise a manner as possible, and theories advanced 

 only to simplify the facts and aid the memory in 

 their retention. The figures have been selected 

 with considerable care and are intended to illus- 

 trate the salient points of the text. They are to 

 be studied as critically as the text, and to further 

 facilitate such a study the descriptive terms are 

 placed on the figures rather than in foot-notes. 



The oral cavity deserves more attention than 

 is usually given this subject. Neglect of proper 

 care of teeth is a common failing, and the cause 

 may be traced directly to a lack of knowledge 

 of their structure and function. This chapter has 

 therefore been enlarged. The author is greatly 

 indebted to Professor Frederick B. Noyes, of the 

 Northwestern University Dental School, for con- 

 tributing most excellent figures on this subject. 

 His critical essays form the basis for the descriptive 

 part of this chapter. 



The author believes most thoroughly in the 

 laboratory method of study. He believes, too, 

 that the laboratory work should precede the class- 



