Title The isthmus of Tehuantepec [electronic resource] : being the results of a survey for a railroad to connect the Atlantic and Pacific oceans, made by the scientific commission under the direction of Major J.G. Barnard, U. S. engineer. With a r-flatsum-flat of the geology, climate, local geography, productive industry, fauna and flora, of that region ... Arranged and prepared for the Tehuantepec railroad company of New Orleans, by J.J. Williams, principal assistant engineer.