COPYRIGHT, 1949, BY HARPER & BROTHERS PRINTED IN
THE UNITED STATES OF AMERICA
All rights in this book are reserved. No part of the
book may be reproduced in any manner whatsoever without written permission
except in the case of brief quotations embodied in critical articles and
reviews. For information address Harper & Brothers
L-X
To Robert Pelton Sibley and Cora Billard Sibley
