COPYRIGHT, 1915, 1919, 1927 

 BY H. W VAUGHAN 



First Edition July, 1915 



Second Edition. June, 1916 



'Ihird Edition. June. 1917 



Fourth Edition July, 191« 



Fifth Edition (Revised), July 191 1» 



Sixth Edition, May. 1920 



Seventh Edition, July, 1921 



Eighth Edition October 192^ 



Ninth Edition (Revised), July, 192:i 



Tenth Edition, August, 1925 



Eleventh E lition, ^ug Jst, 1 »27 



'. T. HEER PRINTING CO. 

 COLUMBUS, OHIO 

 1927 



