February 22nd, 1921.] Proceedings. xvii. 



A number of manometers were exhibited, including a 

 Chattock tilting manometer, and a Threlfall micromanometer 

 lent for the occasion by the Cambridge and Paul Scientific 

 Instrument Company. 



These papers are printed in full in the Memoirs. 



General Meeting, February 22nd, 1921. 



Mr. Francis Jones, M.Sc, F.R.S.E., F.C.S. {Vice-President), 



in the Chair. 



Mr. James Barr, B.Sc. (London), A.I.C., Technical Chemist, The 

 North British Chemical Co., Ltd., Manchester, and Hillside, Townsliffe 

 Lane, Marple Bridge, Derbyshire; was elected as an Ordinary Member 

 of the Society. 



Ordinary Meeting, February 22nd, 1921. 



Mr. Francis Jones, M.Sc, F.R.S.E., F.C.S. (Vice-President), 



in the Chair. 



Mr. J. Wilfrid Jackson, F.G.S., and Mr. R. G. Fargher, 

 M.Sc, were nominated auditors of the Society's accounts for 

 the session 1920 — 1921. 



A vote of thanks was passed to the donors of the books upon 

 the table. These included : — Vol. xxvi. of the " Annals of 

 Botany " (8vo., London, 191 2), presented by Professor F. E. 

 Weiss. 



Mr. W. H. Corkill read a paper entitled "Manx Mines 

 and Megaliths." 



This paper is printed in full in the Memoirs. 



Mr. W T . J. Perry, B.A., read a paper entitled " The Problem 

 of Megalithic Monuments and their Distribution in 

 Great Britain." 



It is possible to associate the dolmens and stone circles which 

 are scattered about in various parts of the county with certain 

 geological formations : in Devon and Cornwall, with the 

 granite ; in Dorset and Wilts., with the Upper Chalk ; in Oxford, 

 with the Lias ; in Derbyshire, with the carboniferous limestone ; 

 and in Wales, with the metalliferous rocks, including the 

 carboniferous limestone. This would suggest that the builders 

 of megaliths went to Devon and Cornwall for gold, tin, or both, 

 to Dorset and W T ilts. for flint, to Derbyshire for lead, and to 

 W T ales for lead, copper, gold, and so on.-- In the North Riding 

 of Yorkshire the Romans, when they went to Whitby to get 

 jet, found stone circles in the neighbourhood ; in Derb3^shire 



