PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 



Series B. Vol. 93/ No. B 655. 



BIOLOGICAL SCIENCES 



CONTENTS. 



Page 



On Blood Platelets : their Behaviour in " Vitamin A " Deficiency and after 

 " Radiation," and their Relation to Bacterial Infections. By W. CRAMER, 

 A. H. q$EW, and J. C. MOTTRAM 449 



Development of the Calcareous Parts of the Lantern of Aristotle in Echinus 



fParis. By D. W. DEVANESEN, M.A. (Plates 11-15) . . . 468 



Origin anjjp^estiny of Cholesterol in the Animal Organism. Part XIII. — 

 On the AMj^fysis of Liver and Spleen. By J. A. GARDNER and 

 F. W. FOX(Beit Memorial Fellow) 486 



Obituary Notices of Fellows deceased : — Earl of Ducie (with portrait) ; 

 Adrian Brown ; Louis Compton Miall ; George Stewardson Brady 

 (with portrait) ; Francis Arthur Bainbridge ; Augustus Desire Waller i — xxx 



Index . . . • • • • • • • xxxl 



Title, Contents, etc. 



JUL? 1 1922 



PRINTED AND PUBLISHED FOR THE ROYAL SOCIETY BY 

 HARRISON & SONS. Ltd., 44-47, ST. MARTIN'S LANE, LONDON, W.C.2. 



Price Three Shillings and Sixpence. 



No. B 655- 



July 1, 1922. 



