Excerpt from Chemistry, First StageFurther experience tells me that it is convenient if demonstrations are given to whole classes at once rather than to single pupils or small groups. It is essential however that pupils, in advance of their fellows, do not proceed with their work till they are in possession of the facts conveyed by the demonstrations, and have answered the questions which follow. In this new edition the endeavour has been made, by photography and letterpress, to reconcile the convenience of the demonstrator with the needs of all his pupils.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.