Copyright, 1911, 

 By the MACailLLAN COMPANY. 



Set up and electrotyped. Published November, iqii. Reprinted 

 August, 1912 ; June, 1914. 



New edition, with corrections, November, 1915 ; July, 1917. 



NortoootJ 19reB8 



J. 8. CiiHhliiL' <•'.. r.tTwick &, Smith Co. 



Norwood, Mass., U.S.A. 



