PROCEEDINGS 



AND 



TRANSACTIONS 



OF 



THE ROYAL SOCIETY 



OF 



CANADA 



THIRD SERIES— VOLUME XIII 



MEETING OF MAY, 1919 



FOR SALE BY 



J AS. HOPE Sf SON, OTTAWA ; THE COPP-CLARK CO. (Limited), TORONTO 



BERNARD QUARITCH, LONDON, ENGLAND 



1920 



