IV ROYAL SOCIETY OF CANADA 



of the somewhat portly volume, the " Additions and Corrections " being 

 of course placed after the other monographs. Although additional data 

 will undoubtedly come to knowledge in the future (and needless to say 

 all such will be very welcome to tha author), I shall present them else- 

 where, probably in local publications; at all events, I do not design to 

 add another to the present series, which is thus definitively closed. 



I desire to take advantage of this opportunity to express my sense 

 of deep personal obligation to the two Honorary Secretaries of tlie Eoyal 

 Society, the late Sir John Bourinot and Dr. S. E. Dawson. From both 

 of them I have received, during the publication of these papers, the 

 ready sympathy of fellow students as well as the helpful consideration 

 of skilled editors. For any value the completed work may have, the 

 student must thank them and the Koyal Society as well as the author. 



March 17, 1906. 



