"Vol. 68.'] ANNIVEESAKY MEETIXG LYELL MEDAL. xliu 



Award of the Lyell [Medal. 



In presenting the Lyell Medal to Philip Lake, M. A., the Peesident 

 ^addressed him as follows : — 



Mr. Lake,— 

 As an old friend of many years' standing, I regard it as a great 

 privilege to hand you the Lyell Medal which the Council has 

 .awarded to you, as to one who ' has deserved well of the Science.' 

 But your work has been so many-sided, that it is not easy to choose 

 that on which to lay the chief emphasis. You have dealt with the 

 stratigraphy and tectonics of the older Palaeozoic rocks in those more 

 •difficult regions which have been left by other observers till last, as 

 in the Dee Valley and about Cader Idris. You have treated of the 

 petrology and the structural relations of both interbedded and in- 

 trusive igneous rocks, and in doing so have carried down our know- 

 ledge of igneous activity well into the Cambrian Period. You have 

 utilized your knowledge of the structure and relations of the rocks, 

 and the superficial deposits resting upon them, to form a theory as 

 to the history of the Dee and of Bala Lake, and have applied this 

 theory to the general drainage-system of North Wales. And last, 

 but far from least, you have done much to elucidate the structure 

 and classification of certain forms of trilobites, more especially 

 Acidas2?is^ and are now engaged upon an elaborate monograph, part 

 ■of which is already published, on the Cambrian Trilobites, a work 

 ihe need for which has long been felt by workers among the older 

 rocks in this countr5^ Your services to Geology do not end here, 

 for by your teaching and organization you have contributed much 

 to the study of geology and geography in Cambridge and its vicinity; 

 while by your translation and adaptation of Kayser's ' Comparative 

 <jeology,' and tlie publication, in conjunction with Mr. llastall, of 

 your Textbook, you have placed the students of stratigraphical 

 geology deeply in your debt. 



Mr. Lake, in reply, said : 



Mr. President, — 

 I am deeply sensible of the honour that the Council has conferred 

 upon me by the award of the Lyell Medal. 



It is an especial pleasure to find in the list of former recipients 

 the names of two of those to whom I am most indebted for my 

 geological training — Prof. Hughes and Dr. Marr. 



d2 



