Copyright, 1905, by W. B. Saunders and Company. Reprinted February, 1906, September, 



1906, and January, 1907. Revised, reprinted, and recopyrighted August, 1907 



Reprinted January, 1908, and October, 1908. Revised, reprinted, and 



recopyrighted August, 1909. Reprinted January, 1910, and July. 



1910. Revised, reprinted, and recopyrighted August, 1911. 



Reprinted January, 1912, and October, 1912, 



Revised, reprinted, and recopyrighted 



September, 1913. Reprinted August, 



igi4. Revised, reprinted and 



recopyrighted September, 



IQI5 



Copyright, 1915, by W. B. Saunders Company 



Registered at Stationers' Hall, London, England 



PRINTED IN AMERICA 



PRESS OF 



W. B. SAUNDERS COMPANY 

 PHILADELPHIA 



