Excerpt from The Canadian Nurse, Vol. 29: A Monthly Journal for the Nurses of Canada; January, 1933 The active product of the thy roid was not known until 1914 when Kendall of Mayo's Clinic iso lated it and called it thyroxin. He found that in normal healthy people its quantity in the body was constant; that in toxic goitre cases it was increased. But it remained for Plummer of the same clinic, in 1922, to prove that it was the ex cess of thyroxin that caused the toxic Symptoms and to prove that iodine in the form of Lugol's solu tion would counteract that excess and bring about a maximum remis sion of toxic symptoms within eight to fourteen days. 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.