, .'•••<. '?' Re p 0 r t upon the results of firings to determine the pressure of the 1110 blast from 15-~nch smooth-bore guns, made at Staten Isl~nd, New 
V York Barbor, m 1872 and 1873, by John Newton, Lleut Col. 
engineers, hvt. Major General, U. S. A., and Q. A. Gi 11 mo r e, maj. 
engineers. bvt. Major General, U. S. A (Mit 5 Taf.) 

8. Washington 1874:.