Excerpt from Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, Vol. 1: Jahrgang 1892Sur les roches volcaniques de la Martinique et de l'ile Saba 81 Sur les enclaves des trachytes du Mt. Doro Sur une roche 6n1ptive de l'ariége et sur la transfori'iiation des feldspaths en wernerite.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.