Excerpt from The Iron-Founder: A Comprehensive Treaties on the Art of Moulding, Including Chapters on Core-Making, Loam, Dry-Sand, and Green-Sand Moulding, Also Crystallization, Shrinkage, and Contraction of Cast-Iron, and a Full Explanation of the Science of Pressures in Moulds, AddedIN writing this book the principal object of the author has always been to help such of his fellow-craftsmen as, by force of circumstances, have been shut out from the wider experience which it has been his good fortune to enjoy.It is not supposed that because a man is ignorant of cer tain truths connected with his trade or profession, that he is desirous of always remaining in that condition, but it must be conceded that very few of us care to confess our ignorance openly, and accept the teachings of those with whom we have been in daily contact, and for whose ability we have entertained only common respect, without question or subsequent investigation.No man cares to parade his ignorance who feels within himself a consciousness of ability, if only the opportunity for improvement were offered him, and hundreds of men in our foundries to-day are earnestly looking for the means which shall lift them to a higher plane of usefulness, as well as establish within themselves a greater degree of self-re spect.It will be a source of great satisfaction to the author if the advent of this book should be a help to such.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.