THE 



GEOLOGICAL MAGAZINE 



NEW SERIES. DECADE VI. VOL. V. 



Ho. IV.— APRIL, 1918. 



GEO;RGE JENNINGS HINDE, 

 Ph.D., F.E.S., F.G.S., V.P. Pal. Soc. 



Born March 24, 1839. Died March 18, 1918. 



With deep regret we record the loss of our old and valued 

 friend George J. Hinde, who for thirty-two years (1886-1918) 

 M'as an Assistant Editor of the Geological Magazine, to which 

 he has contributed over thirty articles. Dr. Hinde served on 

 the Council of the Geological Society for nineteen years, and 

 was a Vice-President in 1893. He was elected a Fellow of the 

 Royal Society in 1896, held the office of Treasurer to the 

 Palseontographical Society for ten years, and became a Vice- 

 President in 1916. He was awarded the Lyeli Medal by tlie 

 Council of the Geological Society in 1897. 



He passed peacefully away at " Ivythorn ", Avondale Road, 

 Croydon, March 18, 1918. Dr. Hinde's portrait, his life and 

 scientific work, together with a list of his memoirs, will appear 

 in Mav.— H. W. 



OE2.IC3-IIT.A.IL. .A.I?.TIOIL>ElS. 



I. — On the Origin of some Land-forms in Caernarvonshire, 

 North Wales. 



By Henry Dewey, F.G.S., of the Geological Survey of England and Wales. 



(PLATE VII.) 



rPHE present paper deals with some 30 square miles of land 

 JL situated in Caernarvonshire and embracing the drainage area 

 of the River Ogwen and parts of adjacent river-basins.^ It is 

 doubtful if any part of Great Britain presents in such a small area 

 so many intei'esting topographical features and such beautiful and 

 diversified scenery as this part of North Wales. It is in part 

 a thoroughly mountainous region accompanied by characteristics that 

 belong to mountains, and it is a glaciated mountain region with 

 typical glacial topography. But adjoining the mountains is an area 

 of entirely different characteristics, and the change from the one to 

 the other is sudden and complete. An upland plain abruptly 

 terminates against a range of mountains without the interposition of 



^ See One-inch New Series Ordnance Map, Sheet 106. 

 decade VI. — VOL. V. — NO. IV. 10 



