li 
|Sk 
NATURAL 
HISTORY. 
PHILOSOPHICAL TRANSACTIONS 
OP THE 
ROYAL SOCIETY OE LONDON. 
Series A, VOL. 222. TITLE, &c. 
TITLE, CONTENTS, INDEX, &c. 
A YOL. 222. 
Printed and Published for the ROYAL SOCIETY by 
HARRISON AND SONS, Ltd, 44-47, ST. MARTIN’S LANE, LONDON, W.C. 2. 
Printers* tn Ortrwarg ta $§isi iHajc^tn. 
1922. 
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