i' •.V 



CAROTENOIDS 



PAUL KARRER 



Director of the Chemical Institute of the University of Ziirich 



ERNST JUCKER 



Research Assistant at the Chemical Institute of the University of Zurich 



TRANSLATED AND REVISED BY 



ERNEST A. BRAUDE 



Lecturer in Organic Chemistry, Imperial College of Science 

 and Technology, London 



ELSEVIER PUBLISHING COMPANY, INC 



NEW YORK AMSTERDAM LONDON BRUSSELS 

 1950 



