.I!' 0 r t i fi c a t ion s, The, of to-day. }'ire against models of coast batteries ,"L~ and parados. Horizontal and curved fire in defense of coasts. 

~ 
Tr.anslated under the direction of the Board of Engineers for 
F 0 r t i fc a ti 0 n s. Colonel John Ne w ton, Corpil of Engineers, 
Bot. Maj.-Gen., U. S. A., President of the Board. 

4. Washington 1883.