Excerpt from Harveian Oration on Old and New Views on the Treatment of Consumption: Delivered Before the Royal College of Physicians of London on October 18, 1911One part Of the circulation Harvey did not discover - viz., the capillaries. He had demon strated the communication between arteries and veins in three situations - the choroid plexus, the spermatic vessels, and the umbilical vessels - but having no microscope he had to leave the discovery of the capillaries to others, and four years after his death Malpighi, by the use of a newly invented microscope, showed in the lungs of a frog how the blood passes from one set of vessels to the other. Thus was the wondrous cycle made complete and the circulation Of the blood, both lesser and greater, manifested to mankind.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.