Excerpt from The Improvement Era, Vol. 45: December, 1942A lack of proper vitamins can cause loss of color in feathers the same as it causes loss of color in hair. It has been found at the University of Cali formia. Chickens fed a diet without pantothenic acid of the vitamin B group developed colorless, often distorted feathers, with insufficient amounts of the vitamin the developed colored feathers, but wit marred appearance.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.