Map of the Isthmus between Chagres and Panama : (Panama Rail Road added.) / by Chief Engineer Napoleon Garella, 1845; drawn by E. Hergesheimer.Garella, NapoleĢon, 1809-18581867]"To accompany Report of Rear Admiral C. H. Davis, U.S.N., ordered by Resolution of the Senate of the United States of March 19, 1866.In right upper margin: No. V.Inset: PrShows proposed route of Panama Canal, railroads, roads, and existing settlements.cartographic