PROCEEDINGS 
OF 
THE ROYAL SOCIETY 
OF 
EDINBURGH. 
YOL. XXXIX. 
NOVEMBER 1918 to JULY 1919. 
MAR 5 1820 
UOAUB 
°QaI Myi6©. 
EDINBURGH: 
PRINTED BY NEILL AND COMPANY, LIMITED. 
MDCCCCXX. 
