44 
SCIENTIFIC BOOKS PUBLISIIED BY 
the various Systems of Blasting by Electricity, Priming Com 
pounds, Explosives, etc., etc. By George M. Mowbray, 
Operative Chemist, with thirteen illustrations, tables, and 
appendix. Third Edition. Be-written. 
Wanklyn’s Milk Analysis. 
12mo. Clotli. $1.00. 
MILK ANALYSIS. A Practical Treatise on the Examination 
of Milk, and its Derivatives, Cream, Butter and Cheese. By 
J. Alfred Wanklyn, M. E. C. S. 
Toner’s Dictionary of Elevations. 
8vo. Paper, $3.00. Clotli, $3.75. 
DICTIONARY OF ELEVATIONS AND CLIMATIC REG- 
ISTEE OF THE UNITED STATES. Contaiuing, in addi- 
tion to Elevations, the Latitude, Mean Annual Temperature, 
and the total Annual Bain Fall of many localities; xvith a 
brief Introduction on the Orographic and Physical Peculiari- 
ties of North America. By J. M. Toner, M. D. 
Adams. Sewers and Drains. 
(In Press.) 
SEWEES AND DEAINS FOE POPULOUS DISTBICTS. 
Embracing Eules and Formulas for the dimensions of Sani- 
tary Engineers. By Julius W. Adams, Chief Engineer of the 
Board of City Works, Brooklyn.