Excerpt from Popular Science Lectures, Vol. 1: Season of 1922-1923, Presented by Members of the Faculty of the Philadelphia College of Pharmacy and ScienceThe lectures were delivered to large audiences by members of the Faculty of the institution and were abundantly illustrated by experiments, lantern slides and specimens. They were subsequently broadcast from several Philadelphia radio transmitting stations.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.