Reports and Proceedings — Geological Society of London. 91 



America is also discussed. It appears that AJces machlis has been 

 frequently found in peaty deposits in many parts of Great Britain 

 and on the continent of Europe, but never in Britain in association 

 with the mammoth ; and it seems probable that in Europe and 

 North America it was a rare animal in Pleistocene times, if indeed 

 it was present before the close of that period. 



o. " Observations on the Tiree Marble, with Notes on others from 

 lona." By Ananda K. Coomaraswamy, Esq., B.Sc, F.L.S., E.G.S. 



The gneiss near Balephetrish has a general south-westerly and 

 north-easterly trend, and the limestone occurs in it as lenticles of 

 various sizes, having a similar foliation. Descriptions of pink, grey, 

 and white varieties of the limestone in this locality are given. The 

 inclusions comprise those of gneiss containing quartz, felspars, horn- 

 blende, augite, scapolite, and sphene as characteristic minerals, and 

 mineral aggregates consisting of sahlite, coccolite, scapolite, sphene, 

 apatite, calcite, and mica. The contact-phenomena are not specially 

 well displayed, but several instances are described ; and in these the 

 minerals of the modified gneiss interlock with those of the modified 

 limestone, and there is no actual line of junction seen under the 

 microscope, although an abrupt change is evident. The dynamic 

 phenomena include the rounding of the minerals (frequently, how- 

 ever, an original character) and the formation of ' augen.' The 

 carbonates are present as a fine-grained granular matrix, the result 

 of the breaking down of larger grains, probably at a temperature 

 not above 300° 0., as indicated by the experiments of Adams and 

 Nicolson. Although there are exceptions, gneiss- inclusions and 

 mineral aggregates have usually been protected from the effects of 

 extreme pressure. The description of minerals includes carbonates, 

 pyroxene, amphibole, forsterite, scapolite, sphene, mica, apatite, and 

 spinel. White, greenish, and black marbles are described from lona, 

 where they are associated with actinolite-felspar-schists and others ; 

 they are included in the gneiss. Sedimentary rocks suggestive of 

 Torridon Sandstone occur along the eastern shore of lona. 



III. — January 7th, 1903. — Professor Charles Lapworth, LL.D., 

 F.R.S., President, in the Chair. The following communication 

 was read : — 



" On the Discovery of an Ossiferous Cavern of Pliocene Age 

 at Dove Holes, Buxton (Derbyshire)." By William Boyd Dawkins, 

 M.A., D.Sc, F.R.S., F.G.S., Professor of Geology in Owens College, 

 Yictoria University (Manchester). 



The Carboniferous Limestone, riddled with fissures and potholes, 

 in the neighbourhood of Dove Holes, has from time to time, in the 

 course of the working of the quarries, yielded remains of extinct 

 mammalia of Pleistocene age. The latest discovery of a group of 

 mammalia, of far higher antiquity than the Pleistocene, is now 

 brought before this Society. The Victory Quarry, Bibbington, in 

 which the discovery was made, is excavated in a rolling plateau of 



