D. VAN NOSTRAND COMPANY 



are prepared to supply, either from 



their complete stock or at 



short notice, 



Any Technical or 



Scientific Book 



In addition to publishing a very large 

 and varied number of SCIENTIFIC AND 

 ENGINEERING BOOKS, D. Van Nostrand 

 Company have on hand the largest 

 assortment in the United States of such 

 books issued by American and foreign 

 publishers. 



All inquiries are cheerfully and care- 

 fully answered and complete catalogs 

 sent free on request. 



25 PARK PLACE NEW YORK 



