SANITARY RELATIONS OF THE 

 COAL-TAR COLORS 



BY 

 THEODORE WEYL 



AUTHORIZED TRANSLATION BY 



HENRY LEFFMANN 

 mo. IS4 Pages. Cloth, net $1.25 



EXAMINATION OF WATER 



FOR SANITARY AND TECHNICAL PURPOSES 



Seventh Edition, Revised 

 Illustrated. i2mo. Cloth, net $1.25 



ORGANIC CHEMISTRY 



A COLLEGE TEXT-BOOK 

 BY 



Henry Leffmann and Charles H. LaWall 

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SELECT METHODS IN FOOD 

 ANALYSIS 



BY 



Henry Leffmann and WitLiAM Beam 



Second Edition, Revised 



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I Plate and 54 Illustrations 



ALLEN'S COMMERCIAL ORGANIC 

 ANALYSIS 



VOLUME 8 CONTAINS: 

 Methods of Analysis of Milk and Milk-Prod- 

 ucts, Meat and Meat- Products, Proteins, Pro- 

 teoids. Fibroids and Enzyms. 

 8vo. 696 Pages. $S.oo net 



