It was in the section included between this range and the Rocky Mountains that the American engineers found the most formidable difficulties in laying the road, and that the government granted a subsidy of forty-eight thousand dollars per mile, instead of sixteen thousand allowed for the work done on the plains.
En esta parte de territorio, comprendida entre esos montes y las Montañas Rocosas, propiamente dichas, los ingenieros americanos han tenido que vencer las más serias dificultades.