2< ii I 



Callaway , F.G.S., gave a paper on " How to Work in the Arcb;oan Rocks." 

 This is n term applied to those Stratified metamorphic rocks which underlie the 

 Lower Cambrian in the British Islands. They consist of gneiss, mica schist, 

 quartzite. halleflintas, &c, and during the last few years have been well worked 

 by a few well-known geologists. They are found in the North of Scotland, 

 Anglesey, Carnarvonshire, and Shropshire, and at St. David's, the Malvern 

 Hills, and Charnwood Forest. The lecturer described their structure and 



I o -i-urrence at these localities, and also tho tests by which the order 

 of superposition of the various beds is ascertained, foron account of the absence 

 of fossils, and the faults which abound in these rocks, this is a difficult matter. 

 He also mentioned that recent research appears to lead to the conclusion that 

 all rocks which have undergone regional nietamorphism belong to the Archtcan 

 system. The paper was followed by a brief discussion. At a meeting on the 

 liltb July, Mr. Bolton exhibited under the microscope two species of Hydn /. >a, 

 Obelia, and Clytia, with their free-swimming mednsifrom gonoph ores. Mr. W. 

 .1. Harrison exhibited large and small varieties of Lima gigantea, from the 

 Lias of Barrow-on-Soar ; pitchstone, from a dyke in Ayrshire ; ami a Serpula 

 on an Ammonite. Mr. J. F. Goode exhibited the tail of a lizard, which had 

 be< ri f mud in the Belgrave Road, a ive and wriggling abont, bat the body was 



overed. Mr. W. P. Marshall exhibited a piece; of slate, from the Cali- 

 fornian brick pits near Harborne, on which were distinct glacial scratches and 

 stri;e ; also some micaceous laminated sand from the same place, both of which 

 had been obtained during the Saturday afternoon excursion. He also exhibited 

 the specimens of Virgularia and Pennatula, which had been dredged at Oban ; 

 and made some remarks upon Ihe other marine animals which had been brought 

 from that place. He stated that the water in which they were found, being in 

 a land-lucked basin, was sensibly not as salt as the sea, but it was not certainly 



ined whether the bottom water, in which the creatures had actually 

 lived, might noi be Baiter than that at the surface. July 26th. — Geological 

 in. — Mr. J. J* .Goode exhibited a slide of Foraminif era, found at Dog Bav, 

 Ireland, by Mr. J. Morley. Mr. A. H. Atkins. B.Sc, and Mr. W. H. Cox, 

 exhibited specimens of fossils and striated pebbles from the boulder clay, at 

 California, near Harborne. Mr. W. J. Harrison, showed some quartzite pebbles, 

 from the drift beds of Moseley and Sparkbrook, containing Orthis BudU ighenais 

 and Mbdiolqpria armorici. Mr. Harrison then opened a discussion on the 

 origin of these pebbles, which was joined in by the members present. Fossils 

 are not very abundant in these quartzites, about one pebble in ten thousand 

 containing them ; but when found they are identical with species occurring at 



b Balterton, in Devonshire, and in situ, m the Lower Silurian r ; 

 Normandy. This is a curious fact, as the drifts of the Midland Counties have 

 been supposed to come from the north and west, ami also to have been derived 

 from tbi rates of the Triassio formation. There are, no 



doubt, many specimens in the gravel pits round Birmingham which would 

 tend to solve these difficultit 3, and a careful examination would well repay any 

 one interested in geological research. 



NOTTINGHAM WORKING MUX'S NATURALISTS' SOCIETY.— The 

 an invite from the Mayor and Sheriff, attended a couver- 

 , in honour of the opening of the new University 

 1 byH R.H. Prince Leopold, Duke of Albany, K.G — July 4th. The monthly 



exhibition of the society was held, when Mr. J. Hazard exhibited some very 

 rare Moths taken by him in this locality this season and last, including 

 Thyatira deras, imicis, Leucania lithargyria, Qotyna fiavago, 



Hydrmeia micacea, Newica saponarice, Heliophobua popularis, Apemea 

 oculea, Miami, etrigilis, Miana fascuinctila, Triptcena subsequa, aoehta 



a, Tamiocampa rubricosa, Xanthia citrag ulvago, I 



oetorolfuca, Poplia chi, Brephoa parthenias, Eucullia scrophularias, Phvto- 

 metra tenia, ana Beveral others. \ nesl of a social Wasp, vespa Britannica, 

 wns fou 26th by Mr. Perrey, suspeu led on a branch of 



hawthorn, Mr. Goldsmith presented to the Society several parts human 

 'none, an .i k ] sa showed several Beotiona under the microscope. Several 

 bouquets of wild Sowers and other specimens w< re shown by the members. 



