138 Reviews — Brief Notices. 



Holderness Drift, and on the Beletnnites of the Yorkshire Lias, by 

 Mr. C. Thompson ; on the Pleistocene fossiliferous beds of Bielsbeck, 

 near Market Weighton, by Mr. J. W. Stather; together with miscel- 

 laneous notes and a useful geological bibliography for E. Yorkshire 

 and N. Lincolnshire, 1906-9, by Mr. T. Sheppard. 



Edinburgh Geological Society. — The Transactions of this Society 

 (vol. ix, pt. v, 1910) contain, among other articles, papers by Dr. S. J. 

 Shand on some Scottish granite-gneiss contacts in the counties of 

 Aberdeen and Argyll, and on Eorolanite and its associates in Assynt, 

 with chemical analyses by Mr. A. Gemmell. Dr. Shand calls 

 attention to evidence that favours the theory of assimilation of lime 

 from underlying Cambrian Limestone in portions of the igneous 

 complex of Cnoc-na-Sroine in Assynt. Numerous illustrations 

 accompany these papers. 



Glasgow Geological Society. — The Transactions of this Society 

 (vol. xiv, pt. i, 1910) open with the Address of the President, 

 Professor J. W. Gregory, who selected for his subject " Work for 

 Glasgow Geologists: the Problems of the South- Western Highlands". 

 He gives an interesting and instructive account of the work of the 

 many geologists who have laboured among the schistose rocks of 

 Argyllshire and Perthshire, and of the numerous difficulties and 

 problems involved in their study. As an aid to further research 

 he has drawn up a table showing the geographical succession and 

 geological correlation of the various Dalradian rocks, remarking in 

 advance that " two of the chief present riddles of Scottish geology are, 

 what is the age of this Dalradian System, and which is the top and 

 which is the bottom of its long succession of deposits ? " 



The Carboniferous rocks of the Solway borders are described by 

 Mr. John Smith, who deals very fully with the fossils, and describes 

 some new species of sponges, turbellaria, annelids, etc. His paper is 

 illustrated by eight plates. Mr. 11. G. Carruthers deals with zonal 

 work in Lower Carboniferous rocks and on the collecting of fossils ; 

 and Mr. II. Dunlop gives an account of the fossil Amphibia in the 

 Kilmarnock Museum previous to the fire of 1909. It is satisfactory 

 to learn that a good many fossils have been recovered from the debris 

 of that disastrous fire. 



Y. — Brief Notices. 



1. Some Features of Alpine Scenery. — In an interesting and 

 well-illustrated essay Professor E. J. Garwood has drawn attention to 

 "Features of Alpine Scenery due to Glacial Protection" (Geograph. 

 Joitrn., September, 1910). As he remarks at the outset, " No one 

 with any knowledge of glaciated regions doubts that moving ice 

 erodes," but his object is to bring forward evidence to show that ice, 

 on the whole, erodes less rapidly in the Alps than other denuding 

 agents, and under certain conditions may act as a protective agent. 



2. Ice on Canadian Lakes. — This subject is dealt with by Mr. J. B. 

 Tyrrell (Trans. Canadian Inst., ix, 1910), whose observations establish 

 the following points. In regions of heavy snowfall the ice is being 

 constantly pressed down into the water by the weight of snow, and 

 therefore there is often water over it and beneath the snow. In these 



