LECTURES 



ON 



THE PRINCIPLE OF SYMMETRY 



AND 



ITS APPLICATIONS IN ALL 

 NATURAL SCIENCES 



BY 



F. M. JAEGER, Ph. D. 



PROFESSOR 'OF INORGANIC AND PHYSICAL CHEMISTRY 

 IN THE UNIVERSITY OF GRONINGEN, NETHERLANDS 



SECOND. AUGMENTED EDITION 



WITH 173 DIAGRAMS AND 3 PORTRAITS 



AMSTERDAM - PUBLISHING COMPANY ,,ELSEVIER" - 1920. 



ALL RIGHTS RESERVED. 



