Note 50 — Chapter I · NICARAGUA: BOUNDARIES, TOPOGRAPHY, LAKES, RIVERS, PORTS, CLIMATE, POPULATION, PRODUCTIONS, MINES, ETC., ETC.

“In Central America, lignite, including amber, occasionally occurs from Costa Rica to San Salvador, and in all probability further south as well as north. Pieces of amber, some with insects in them, derived from the tertiary coal formations of the Bay of Tamarinda, I saw at Leon, where I saw also some samples of coal from the neighborhood of that city. They were of a greyish black color, rather hard, with the texture of wood clearly visible. On being burnt, a considerable quantity of ashes were left, in some cases of a white, in others of a red color.”—Frœbel’s Seven Years in Central America, p. 68.