CHIRIQUI.

The so-called Isthmus of Chiriqui, lying between Panama and Nicaragua, was explored by the late Lieut. St. Clair Morton, who was killed in the siege of Petersburg. Lieut. Morton crossed the Isthmus twice, and pronounced the route practicable for a railroad. As no notes of this survey are extant, curiosity in regard to this route must remain unsatisfied. Lieut. Jeffers, U. S. N., speaks favorably of the harbors. Mr. Evans, the geologist, discovered an inferior kind of coal. Another reconnoissance may develop some important information.