Copyright, 1905, by W. B. Saunders and Company. Reprinted Janu- 

 ary, 1906, April, 1907, August, 1908, and February, 1909. Re- 

 vised, reprinted, and recopyrighted January, 1910. 

 Reprinted September, 1910, and January, 1912. 

 Revised, entirely reset, reprinted, and 

 recopyrightsd September, 1913. 



Copyright, 1913, by W. B. Saunders Company. 



Reprinted September, 1914 



PRINTED IN AMERICA 



W'. Br SAUNDEtiS^COWOAfOf r < r 

 , r PHILADELPHIA 



