Excerpt from Familiar Letters on Chemistry: In Its Relations to Physiology, Dietetics, Agriculture, Commerce, and Political Economy My friend Dr. Gregory, who assisted me in the former editions, has, meantime, been removed by a Higher Power from his family and from science. United for more than twenty years by the ties of a sincere and intimate friend ship, no one feels more keenly than I do, the great loss sustained by his friends in his death. Rare extent of knowledge, combined with admirable powers of mind, enabled him to apprehend exactly the ideas and views of others, and to put them forward in the best form, and with the precision of original composition. 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.