I). VAN NO STRAND. 
43 
Bow oii Bracing. 
156 Illustration8 on Stone. 8vo. Clotb. $1.50. 
j A TKEATISE ON BRACING, with its application to Bridges 
and other Structures of Wood or Iron. By Robert Henry 
Bow, C. E. 
Howard’s Eartliwork Mensuration. 
8vo. Illustrated. Clotb. $1.50. 
EARTHWORK MENSURATION ON THE BASIS OF 
THE PRISMOIDAL FORM UHE. Containing simple and 
labor-saving method of obtaining Prismoidal Contents direct 
ly from End Areas. Illustrated by Examples, and accom- 
panied by Plain Rules for practical uses. By Conway R. 
Howabd, Civil Engineer, Richmond, Ya. 
McAlpine’s Modern Engineering. 
Second Edition. 8vo. Clotli. $1.50. 
MODERN ENGINEERING. A Lecture delivered at the Amer 
ican Institute in New York. By William J. McAlpwe. 
Mowbray’s Tri-Nitro-Glycerine. 
8vo. Cloth. Illustrated. $3.00. 
TRI-NITRO-GLYCERINE, as applied in the Iloosac Tunnel, 
and to Submarine Blasting, Torpedoes, Quarrying, etc. Being 
the result of six years’ observation and practice during the 
manufacture of five hundred thousand pounds of this explo 
sive, Mica Blasting Powder, Dynamites; with an account of