Vol. 62.] ANNIVERSARY MEETING LTELL MEDAL. xlv 



Award op the Ltell Medal. 



In handing the Lyell Medal, awarded to Prof. Frank Dawson 

 Adams, Ph.D., to Sir Archibald Geekie, Sc.D., Sec.R.S., for 

 transmission to the recipient, the President addressed him as 

 follows : — 



Sir Archibald Geikie, — 



The Lyell Medal is awarded to Prof. Frank D. Adams as a mark 

 of honorary distinction, and as an expression on the part of the 

 Council that he has deserved well of the science, particularly by his 

 contributions to our knowledge of the geology of Canada. 



Prof. Adams has been actively engaged in the study of the rocks 

 of the great Dominion, and by work in the field and the laboratory 

 has contributed largely to our knowledge of their petrography and 

 their genesis. The study of those ancient rocks, the pre-Cambrian 

 age of which was first demonstrated in Canada, has advanced far 

 during recent years ; but they are still to some degree enshrouded 

 in mystery, and the labours of our Medallist are throwing light 

 upon the obscurity. 



He is also occupied with work among igneous rocks bearing upon 

 problems connected with petrographical provinces and the differen- 

 tiation of igneous magmas. I may more especially allude to his 

 paper on ' The Monteregian Hills — a Canadian Petrographical Pro- 

 vince,' published in ' The Journal of Geology ' for April-May 1903. 



Nor has he occupied himself with observation to the neglect of 

 experiment, and one result of his laboratory-work is that most 

 interesting and suggestive paper, ' An Experimental Investigation 

 into the Flow of Marble,' written in conjunction with Dr. J. T. 

 Nicolson, and published in the Philosophical Transactions of the 

 Koyal Society (ser. A, vol. cxcv, 1901, p. 363). The experiments 

 described in this paper tend to prove that not only 



' The solid earth on which we stand, 

 In tracts of fluent heat began, 

 And grew to seeming-random forms, 

 The seeming prey of cyclic storms/ 



but that, even now, internal tracts which are in the ordinary sense 



solid, 



' flow 



From form to form ' . . . . 



with results which have a most important effect upon various rock- 

 structures. 



