Excerpt from The Changeful Earth: An Introduction to the Record of the RocksSO much attention is now given to the practical and systematic study of science in schools, that the valuable in¿uence of descriptive scientific literature is apt to be overlooked. An intimate knowledge of the simplest fact in Nature can be Obtained only by personal observation or experiment in the Open air or the laboratory, but broad views of scientific thought and progress are secured best from books in which the methods and results of investigation are stated in language which is simple without being childish.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.