VAN NOSTRAND'S 
"Westminster Series 
Bound in uniform style. Fully Illustrated. Price S2.00 net each. 
The Volumes in the " Westminster " Series have 
been designed to meet the growing demand for books 
on practical subjects ; to bring within the ken of 
the non-technical reader an accurate knowledge of 
manufacturing processes and the practical appli- 
cation of modern science to industries. Each 
volume is written by an expert to the end that 
practical readers and all who 'are engaged in the 
numerous alHed branches of the engineering 
and technical trades may have reliable works 
of reference. The series provides for a class not 
hitherto reached in pubHshed works. The 
volumes can be easily read by the general 
public, and make excellent handbooks at a 
moderate price for the student. 
The series is well suited to public libraries and 
will be found valuable for libraries in engineering 
shops and factories. 
D. VAN NOSTRAND COMPANY 
Publishers and Booksellers 
23 Murray and 27 Warren Streets, New YorK. 
