A V ' ' V U 



^-v < vYM " 



COPYRIGHT, 1921, BY P. BLAKISTON'S SON & Co. 



"The use in this volume of certain portions of the text of the United 

 States Pharmacopreia is by virtue of permission received from the Board 

 of Trustees of the United States Pharmacopoeial Convention. The said 

 Board of Trustees is not responsible for any inaccuracy of quotation nor 

 for any errors in the statement of quantities or percentage strengths." 



THE MAPLE PRESS YORK PA 



