Excerpt from A Manual of Mineralogy These two characters have a reference to the mode or degree in which the integrant molecules of bodies mutually cohere. In some aggregates, though the contact of the particles appears to be perfect, yet the general cohesive force is very feeble, in conse quence of the easy mobility of the particles upon and among each other. Such substances are in common language called liquid. The number of liquid mi nerals is very small, not exceeding two or three, yet each of them differing remarkably from the other in the kind and degree of liquidity. Solids are the only bodies concerning which the terms hard and soft can be used with any propriety. 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.