Reports and Proceedings — Geological Society of London. 177 



in their neighbourhooil may argue that metal carbonyls were also 

 present. 



Finally, Professor Weinschenck would suppose the following to 

 have been the sequence of events in Ceylon :— A fluid magma 

 intruded into beds of unknown age consolidated as a peculiar 

 ' schlierig ' rock, while contact - metamorphic structures were 

 developed in surrounding beds. Contraction-joints developed on 

 cooling, allowed the formation of pegmatites, including pure quartz 

 veins to some extent. But, contemporaneously with the formation 

 of the pegmatite, there were emanations of carbon monoxide and 

 cyanogen-bearing compounds, which followed the same paths as 

 the pegmatites and then gave rise to the graphite veins. The 

 system of veins traversing the whole massif played in later 

 mountain movements the role of buffer, the soft yielding mineral 

 absorbing the mechanical effects, and thus the Ceylon granulites 

 remained unaltered by dynamic changes. 



I have attempted in this review merel}'^ to give an abstract of 

 Professor Weinschenck's views as expressed in his important paper. 



A. K. COOJIAUA-SWAMY. 



Geological Society of London. 



I. — February 15th, 1901.— J. J. H. Teall, Esq., M.A., V.P.R.S., 

 President, in the Chair. 



Annual General Meeting. 



The reports of the Council and of the Librai-y and Museum 

 Committee for the year 1900. proofs of which had been previously 

 distributed to the Fellows, were read. The Council stated that, 

 although there was a decrease in the number of Fellows, the financial 

 prosperity of the Society continued undiminished. 



The report of the Library and Museum Committee enumerated 

 the increasingly extensive additions made to the Society's Library. 



Tlie reports having been adopted, the President handed the 

 Wollaston Medal, awarded to Professor Charles Barrois, F.M.G.S., 

 of Lille, to Sir Archibald Geikie, for transmission to the recipient, 

 addressing him as follows :— Sir Archibald Geikie, — 



lu these days ot specializatiou tew men are eudowed with tliosi^ faculties which 

 enable them to contribute with marked ability to all branches of our many-sided 

 science ; but amono- those few Professor Barrois must unquestionably be ranked. 



In the monograph on the Calcaire d'Erbray and many otlier papers ho lia.s 

 established his reputation as a paLeontologist ; in uumeroas memoirs on the Granitic 

 and Metamorphic Rocks of Brittanv he figures as an accomplished petrologist ; 

 while in the many geological maps of' the same district he has constructed a lasting 

 monument to his skill and energy as a geological surveyor. 



His published work represents a vast accumulation of facts carefully <ibsoryed, 

 clearly described, and lucidly arranged. More than this, it is often full of suggestive- 

 ness. He has had the satisfaction of initiating lines of research which have hrcu 

 followed up with great success by others. • i • , 



It was he who first taught us how to zone our English Chalk by the aid ot the 

 fossils which it contains, and the friendships which he formed during the progress 



DECADE IV. — VOL. VIII. — KO. IV. *- 



