©1958 



by 

 The Boxwood Press 



Tenth printing, 1986. 



No part of this book may be reproduced 

 in any form without written permission 

 of the Copyright owner. 



Distributed by 



THE BOXWOOD PRESS 

 183 Ocean View Blvd. 

 Pacific Grove, CA 93950 



SBN: 910286-02-7 



I 



Cover photograph 

 *•■ by 



John A. Gibson 

 Professor of Chemistry 

 West Virginia University 



^Printed in U.S.A. 



IV 



