526 Reports & Proceedings — Liverpool Geological Society. 



been determined by mapping the lateral and terminal moraines, 

 marginal channels, and over wash deposits. 



That the period of the valley glaciers formed a distinct phase in 

 the history of the Ice Age is suggested by the occurrence between 

 Cambus o' May and Dinnet of two boulder-clays: in two sections 

 one can be seen superposed upon the other. The upper, the moraine 

 profonde of the valley glacier, differs in composition and resistance to 

 denudation from the lower, the product of the ice-sheet. 



The whole or a great part of Glentanner, also, seems to have been 

 occupied by a valley glacier. 



2. " Occurrences of Old Red Sandstone in and near Aberdeen." 

 By Dr. Bremner. 



Old Bed Sandstone is known to occur at seven different places 

 over a considerable area within the city boundaries. In a bore at 

 Sandilands Chemical Works the rock was encountered about 96 feet 

 below O.D., and at 625 feet below O.D. it had not been bottomed. 

 A Lemon Street bore entered it at 60 to 65 feet below O.D. At 

 Woolmanhill it was encountered at sea-level, and found to have 

 a total thickness of 189 feet ; the bore was carried down 9 feet into 

 the underlying metamorphic rock. 



A small outcrop occurs in the banks of the Millden Burn, 6 miles 

 north of Aberdeen. 



All the rock proved is of Middle Old Bed type. 



3. " Notes on the Lochend Sill." By Bobert Allan, B.Sc. 



Some particular features in the petrology of the Essexite intrusion, 

 previously described in the G.S. Memoir on the Bocks of the 

 JSTeighbourhood of Edinburgh, were pointed out and illustrated by 

 means of lantern views. The great variation which occurs throughout 

 the sill, the characteristic feature of which is the presence of a soda- 

 rich felspar, was also indicated. Particular slides were shown in 

 which the relationship between the ilmenite, biotite, and chlorite 

 present in the rock was brought out. Both at Hawkhill and 

 Lochend portions of the intrusion have a spotted appearance, and 

 these spots in many instances were found to consist mainly of 

 analcite, and seemed to be of the nature of ocelli, or local 

 segregations of the residual mao^ma late in crvstallizing- out. 



II. — LiVEBPOOL Geological Society. 



October 8, 1918.— J. C. M. Given, M.D., M.B.C.P., F.G.S., President, 



in the Chair. 

 At the annual meeting of this Society, which now enters upon its 

 sixtieth session, the President read an address upon "The Geological 

 Position of Primates", in which he gave an account of recent 

 research and discoveries bearing upon the origin and antiquity of 

 man. The writings of Butot and others on the so-called "Eoliths", 

 which they claim to be of human manufacture, would take back 

 man's origin to at least Miocene times, and had led to wild specula- 

 tions on the subject, so that it seemed profitable to consider the 

 question, not from the standpoint of the earliest appearance of man, 



