Excerpt from Analysis of Program Activities, National Institutes of Health, 1955: National Heart Institute, Division of Biologics Standards, Division of Research Services Near the close of the year several new observations were made on plant materials from Costa Rica and Puerto Rico. Indi cations of hypotensive action will be followed as rapidly as possible by isolation stu lies. In one instance a sedative action, somewhat resembling that produced by chlorpromazine (used in the treat ment of mental illness) was found. This is an important develop ment which requires further work. An active fraction has been isolated and is currently undergoing pharmacological evaluation. 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.