Note 81 — IDEAS FOR A PHYSIOGNOMY OF PLANTS.
Henry G. (Henry George) Bohn translation
p. 218—“The mountain-declivities of the most southern parts of Mexico.”
The spherical greenstone in the mountain district of Guanaxuato 268is perfectly similar to that of the Fichtelberg in Franconia. Both form grotesque domes, which break through and are superimposed on transition argillaceous schists. In the same manner pearl-stone, porphyritic schist, trachyte, and pitch-stone porphyry present analogous forms in the Mexican mountains, near Cinapecuaro and Moran, in Hungary, Bohemia, and in Northern Asia.