Seventh edition 

 © Copyright, The Macmillon Company, 1959 



All rights reserved. No part of this book may be re- 

 produced or utilized in any form or by any means, 

 electronic or mechanical, including photocopying, 

 recording or by any information storage and 

 retrieval system, without permission in writing from 



the Publisher. 



Eighth Printing, 1966 



Previous editions © copyright 1912, 1926, 1931, 

 1936, 1942 and 1951 by The Macmillon Company 



Renewal copyrights 1940 by Robert W. Hegner and 

 1954 and 1959 by Jane Z. Hegner 



Library of Congress catalog card number: 59-5186 



The Macmillon Company, New York 

 Coilier-Macmillan Canada, Ltd., Toronto, Ontario 



Printed in the United States of America 



