D. VAN NOSTRAND. 
5 
Clarke’s Quincy Bridge. 
4to. Cloth. $7.50. 
DESCKIPTION OF THE IKON EAILWAY Bridge across the 
Mississippi Eiver at Quincy, Illinois. By Thomas Curtis Clarke, 
Chief Engineer. Illustrated with twenty-one lithographed 
plans. 
Barba on the Use of Steel. 
12mo. Illustrated. Cloth. $1.50. 
THE USE OF STEEL IN CONSTRUCTION. Method of 
Working, Applying, and Testing Plates and Bars. By J. 
Barba, Chief Naval Constructor. Translated from the 
French, with a Preface, by A. L. Holley, P.B. 
Whipple on Bridge Building. 
8vo, Illustrated. Cloth. $4.00. 
AN ELEMENTAEY AND PEACTICAL TEEATISE ON 
BBIDGE BUILDING. An enlarged and improved edition of 
the Author’s original work. By S. Whipple, C. E., Inventur of 
the Whipple Bridges, &c. Second Edition. 
The design has heen to develop from Fundamental Principles a System easy 
of comprehension, and such as to enable the attentive reader and Student to 
judge understandingly for himself, as to the relative merits of different plans 
and combinations, and to adopt for use such as may be most suitable for the 
cases he may have to deal with. 
It is hoped the work may prove au appropriate Text-Book upou the subject 
treated of, for the Engineering Student, and a useful manual for the Practio- 
ing Engineer and Bridge Builder.