ACCURACr 



is of the first importance in the 



PRINTING 



of Scientific matter. I have 

 for years made a specialty of 

 this class of work, and have 

 reduced to a minimum the 

 liability of typographical 

 errors. ^ ^ ^ ^ 

 THE AMERICAN 

 NATURALIST, 

 and many magazines of the 

 same high-grade of excellence 

 are printed in this office. ^ 

 I solicit especially journals 

 and pamphlets of a scientific 

 or technical character. Com- 

 position unlimited ; articles 

 may be held in proof as long 

 as desired. Type always 

 new, never used the second 

 time. ^ 



All facilities necessary for 

 quick and satisfactory service 



EDWARD W, WHEELER 



PRINTER AND PUBLISHER 



30 BOYLSTON STREET CAMBRIDGE. MASSACHUSETTS 



