Excerpt from The Archives of Internal Medicine, 1919, Vol. 23 After 14 c.c. Of tincture of digitalis, P3 was definitely upright and remained so during 'the administration of digitalis (fig. 3, C). Record taken at the time of discharge, eight days after the last digitalis had been given, Showed a variable P3, upright, diphasic or inverted (fig. 3, D). Summary: Inverted or diphasic P3, rendered upright by atropin, becoming inverted again after recovery from the atropin, then rendered upright by the administration of digitalis and remaining upright throughout its administra tion, becoming again variable eight days after the last digitalis had been given, when it appears upright, diphasic or inverted. 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.