Copyright, 1942, bv

Company, Inc.

All Rights Reserved

This book} or any part thereof^ may not be reproduced
in any form without permission in writing from the

authors and the publisher.

First Published April 1942

Reprinted February 1943, December 19469
November 1947

FRINTEB IN THB XTNITBD STATES OF

XJINCAST3B* PRESS, INC., LANCASTER,

PA.