U. S. NATIONAL MUSEUM 



BULLETIN 173 PLATE 13 



STEAM Engines. 1864-1875. 



1. Horizontal steam engine, 1864 (U.S.N.M. no. 310241). See p. 48. 

 2. Tliompson and Hunt steam engine, c. 1875 (model; U.S.N.M. no. 309645). See p. 50. 



