Inside Out Library · ExploreScientific American, Vol. 30, No. 21 (1874) (1874)leaf 4Srientific American. May 23, 1874.] © 1874 SCIENTIFICAMERICAN,INC.Internet Archive · Public domain (published before 1931). Free to use for anything.More pictures from Scientific American, Vol. 30, No. 21 (1874)More like this
