Excerpt from An Investigation of the Louse Problem In April, 1917, a committee, representing different departments of the University, was formed to stimulate research dealing with war problems. The subcommittee from the Medical School, at the suggestion of Professor Leonard G. Rowntree, submitted the louse problem as one which required further investigation. Accordingly, during the rest of 1917 and the early part of 1918, the question was investigated by the writers under a grant from the Research Fund of the Graduate School granted by the Regents of the University of Minnesota, but in March, 1918, at the request of Dr. Richard M. Pearce, the work was continued under the direction of the Division of Medicine and Related Science of the National Research Council. The National Research Council supplied funds for the continua tion of the work, but the entire research was conducted by the authors as members of the University staff, a room and facilities being freely placed at our disposal. We wish to express our appreciation of the courtesies and assistance of Dr. Pearce and others in Washington, and our indebtedness to Dean R. W. Thatcher, Director of the Experiment Station, and to the University authorities for the privileges and cooperation they have granted us during the investigation. 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.