part 1 ANNIVERSARY ADDRESS OF THE PRESIDENT. lxiil 



Horas Tristram Kennedy was one of the most promising of' 

 our younger geologists. After winning a First Class in the 

 Natural Sciences Tripos at Cambridge, he joined the staff of 

 the Geological Survey of Ireland in 1913, and was engaged on the 

 revision of the Leinster Coalfield. He had been detailed to resurveY 

 the Lower Palaeozoic rocks of the West of Ireland, when war 

 broke out, and Kennedy joined the Army. As lieutenant in the 

 Royal Scots Fusiliers he took part in heavy fighting in 1916, and 

 at the close of that year was attached to the Field Survey of the 

 Royal Engineers, a service which afforded scope to his scientific- 

 aptitudes. He was killed in Flanders on June 6th, 1917, aged 28. 



Frank Remington Pbetyman was an Associate of the Royal 

 School of Mines. After visiting Mexico and Canada as a mininsr 

 engineer, he joined the Geological Survey of Wisconsin. Upon 

 the outbreak of war he returned to this country, enlisted in the 

 Royal Engineers, and subsequently obtained his commission and 

 became a lieutenant in that regiment, doing good service in sapping 

 work in France. Later he exchanged into the Scots Guards, and 

 he was killed in action on July 4th, 1917, aged 26. 



I pnypose now to offer some reflections of a general kind upon 

 the present position and outlook of the study of 

 metamorphism in rock-masses. 



For more than one reason the petrologist stands to-day in face 

 of exceptional opportunities, and may hope to record important 

 advances in the near future. In addition to the steadY o- r owth 

 of material which accrues, here as in other departments of 

 knowledge, from research directed along established lines, valuable 

 aid is tendered from other quarters. This, of course, is no new 

 thing. Indeed geology is best defined by its aims rather than 

 by its methods ; and it is possible to regard it, not as a distinct 

 science apart, but as the application of all the sciences to certain 

 ends. None the less, the development of physical chemistry 

 during recent years, deriving its impetus from the recognition 

 of the Phase Rule and its consequences, means so much for- 

 petrology that it must be considered as marking for us a distinct 

 epoch. This has been recognized by the chemists themselves, 

 especially in the establishment at Washington of a laboratory 

 with the object of attacking the main problems of petrology 

 directly from the experimental side. Again, experiment as applied 



