Set up, electrotyped, printed, and copyrighted. September, 1905. Reprinted,, 



February, 1906, September, 1906, and January, 1907. Revised, 



reprinted, and recopyrighted, August, 1907. 



Copyright, 1907, by W. B. Saunders Company. 



PRESS OF 

 W. B. 8AUNDERS COMPANY. PHILADA. 



