Miocene columnar basalts that contributed to the formation of the Isthmus of Panama are removed for the expansion of the Panama canal. This material relates to a paper that appeared in the Aug. 17 ...

This item is openly available as part of an Open JSTOR Collection. For terms of use, please refer to our Terms & Conditions. Proceedings of the Royal Geographical ...

THE canal proposed by M. de Lesseps, and intended to pierce the Isthmus of Panama is in many respects a bolder enterprise even than the Suez Canal. The engineering difficulties are far greater ...

The Americas weren’t always attached. Millions of years ago, the continents came into contact, permitting ancient mammals to cross the Isthmus of Panama. But this great migration was overwhelmingly ...

In the month of November I visited the Isthmus of Panama, going over the Canal Zone with considerable care; and also visited the cities of Panama and Colon, which are not in the Zone or under the ...

the French Compagnie Universelle du Canal Interocéanique began work on a canal that would cross the Colombian isthmus of Panama and unite the Atlantic and Pacific Oceans. Ferdinand de Lesseps ...