NEW YORK 



D. Van Nostrand Company, Inc., 250 Fourth Avenue, New York 3 



TORONTO 



D. Van Nostrand Company (Canada), Ltd., 25 Hollinger Rd., Toronto 



LONDON 



Macmillan & Company, Ltd., St. Martin's Street, London, W.C. 2 



Copyright, 1954, by 

 D. VAN NOSTRAND COMPANY, INC. 



Published simultaneously in Canada by 

 D. Van Nostrand Company (Canada), Ltd. 



All rights in this book are reserved. Without 

 written authorisation from D. Van Nostrand 

 Company, Inc., 250 Fourth Avenue, New 

 York 3, New York, it may not be reproduced in 

 any form in whole or in part {except for quota- 

 tion in critical articles or reviews), nor may it 

 be used for dramatic, motion-talking-picture , 

 radio, television, or any other similar purpose. 



Library of Congress Catalogue Card No. 54-5780 



First Printing, March ig^4 



Second {Prepiiblication) Printing, March ig$4 



Third Prifiting, May /pjj 



printed in the united states of AMERICA 



