68 



Av/es and Comments. 



rocks, the granites of Scotland, and the slates of Wales.' It is 

 apparent that Sir Archibald should take a few lessons in field 

 geology, under the guidance of Mr. E.. M. Wrench, M.V.O..^ 

 F.R.C.S. 



A GEOGRAPHICAL OBSERVATION, 



Mr. Wrench has made yet another observation. He has 

 traced the size and extent of the ' Derwent Glacier ' ; and 

 located its marks. ' The flow of such a glacier in a valley of 

 such easy gradient, would not be more than a few inches per 

 day, or two hundred yards in a year, and if so, its progress would 

 occup3" several centuries, and confirm Lord: Avehiiry' s calculation 

 of the duration of the Glacial Period lasting one hundred and 

 fifty thousand years ! ' Doubtless Lord Avebury will be duh^ 

 grateful for this striking confirmation of his theory. 



GLACIERS AND PLACE-NAMES. 



Mr. Wrench writes ' Lastty [thank heaven !] many place 

 names are derived from the glacial features of the soil, such as 

 ro2e«/zw/s/=Raggedwood, mentioned in Geological Survey as 

 possibly glacial moraine; PForw«^^r= Wormstall=Dragon's den. 

 The River Derwent, clear water, from the clean sweep of the 

 shale from the valley.' Quite so ; and just in the same way 

 the name Wrench must be of glacial origin, as it belongs to an 

 ' M.V.O., F.R.C.S.' 



THE NATIONAL TRUST_ 



We have recently received the thirteenth Annual Report 

 of the National Trust for Places of Historic Interest or Natural 

 Beauty, and it is very pleasant reading. The land upon which 

 the ' Grey Wethers ' occur, near Marlborough, already referred 

 to in these columns, has been secured to the nation for all 

 time ; Ludshott Common (542 acres) and the adjoining wood- 

 land (17J acres) can be secured for £1800, and of this all but 

 £150 has been subscribed. Other tracts of land are announced 

 as gifts to the Trust, and are now preserved to the public for 

 ever. In man}^ instances these ' breathing-spaces ' have been 

 snatched from the hands of the speculative builder. The 

 Report also contains a lengthy list of lands, historic buildingb 

 and monuments under its charge, from which it is apparent 

 that its excellent work will be much more appreciated in the 

 future by the public than it is to-da}-. The Secretary, Mr- 

 Nigel Bond, of 25 Mctoria Street, Westminster, S.W., will. 



Naturalist^ 



