Excerpt from The American Journal of Science and Arts, Vol. 10 Limestone is common all over the county. It is found on the tops of many of the bills, but in far greater quantities in the earth at their bases; beds of it being brought to light by the washing away of the superincumbent earth in the courses of rivers and creeks. It is generally impregnated with iron, which gives it a brown, or ochreous cast, when burnt and slaked for use; this does r prevent its making excellent mortar, when duly proportioned With sand; and to give it that clear white so much admired in the plaister for inside work, we make use of a coat prepared from lime made of burnt shells, than which thing can give a purer white. 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 techlogy 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.