22 SCIENTIFIC BOOKS PUBLISHED BY 



Barnes Submarine Warfare. 



8vo. Cloth. $5.00. 



SUBMARINE WARFARE, DEFENSIVE AND OFFENSIVE. 



Comprising a full and complete History of the Invention of the 

 Torpedo, its employment in War and results of its use. De 

 scriptions of the yarious forms of Torpedoes, Submarine Batteries 

 and Torpedo Boats actually used in War. Methods of Ignition 

 by Machinery, Contact Fuzes, and Electricity, and a full account 

 of experiments made to determine the Explosive Force of Gun 

 powder under Water. Also a discussion of the Offensive Torpedo 

 system, its effect upon Iron-Clad Ship systems, and influence upon 

 Future Naval Wars. By Lieut. -Commander JOHN S. BARNES, 

 U. p. N. With twenty lithographic plates and many wood-cuts. 



&quot; A book important to military men, and especially so to engineers and ar 

 tillerists. It consists of an examination of the various offensive and defensive 

 engines that have been contrived for submarine hostilities, including a discus 

 sion of the torpedo system, its effects upon iron-clad ship-systems, and its 

 probable influence upon future naval wars. Plates of a valuable character 

 accompany the treatise, which affords a useful history of the momentous sub 

 ject it discusses. A great deal of useful information is collected in its pages, 

 especially concerning the inventions of SCHOLL and VEHDU, and of JONES 

 and HUNT S batteries, as well as of other similar machines, and the use in 

 submarine operations of gun-cotton and nitro-glycerme.&quot; JV. Y. Times. 



Randall s Quartz Operator s Hand- 

 Book. 



12mo. Cloth. $2.00. 



QUARTZ OPERATOR S HAND-BOOK. By P. M. RANDALL. 



New edition, revised and enlarged. Fully illustrated. 



The object of this work has been to present a clear and comprehensive ex 

 position of mineral veins, and the means and modes chiefly employed for the 

 mining and working of their ores more especially those containing gold and 

 silver. 



