Excerpt from A Description of the Soil-Geology of Ireland, 1907: Based Upon Geological Survey Maps and Records With Notes on Climate The granitic gneisses of Erris (north Mayo), of the Ox Mountains, Connemara, and South Donegal, which, on account of 'lithological similarity to those of the North-west of Scotland, were supposed to be of Archaean age, are now known to be intrusive rocks, newer than the adjoining mica-schists, quartzites and limestones, and are represented accordingly: Other less important differences have also been duly noted upon the present map, with a view to bringing this into line with information obtained up'to 1900. It remains for me to explain that, having in view a class of readers more conversant, perhaps, with the industrial aspects of the subjects than the scientific, I have avoided, as much as pos sible, geological expressions which might be thought too technical, and have distinguished by capital initials, and otherwise, some which were unavoidable. To facilitate reference, paragraph head ings and other means have abundantly been used. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.