Copyright, 1910, by W. B. Saunders Company. Reprinted July, 1911. 



Revised, reprinted, and recopyrighted November, 1913. 



Revised, reprinted, and recopyrighted November, 1916. 



Copyright, 1916, by W. B. Saunders Company 



PRINTED IN AMERICA 



OF 



3. 8AUNUERS COMPANY 

 PHILADELPHIA 



