320 Notices of Memoirs. 



and also for the fact of their skulls being found separate from the 

 remainder of the skeleton. 



There are some Notes on Mines and Mineral Localities, in which 

 are noticed the spots where mining operations have taken place, and 

 also the localities where lead, copper, and sulphur have been found. 



2. — The second Memoir is occupied in the description of parts of 

 the counties of Galway, Mayo, Eoscommon, and Longford, situated 

 between the towns of Ballinrobe and Longford. The country is 

 gently undulating, with a good deal of bog on the east and west, 

 and for the most part with bare crags in the centre. The outline of 

 the eastern shore of Lough Mask (a part only of which is contained 

 in the maps now described) presents a remarkable contrast to that 

 of its western shore. For while the latter maintains a nearly even 

 line, the eastern shore is indented by numerous bays and inlets, 

 ranging in a N.N.E. direction, and running far into the heart of the 

 limestone country, where they spread out into wide but shallow 

 loughs. The general direction of these arms is shown to be parallel 

 to the glacial striations of the district. 



The formations represented are Alluvium, Peat Bog, etc. ; Drift 

 Gravel, Clay, and Boulders ; Carboniferous Limestone, and Yellow- 

 ish Grits and Conglomerates ; Lower Silurian Eocks ; and Felstone. 



The Lower Silurian rocks, which consist of grits and slates, have 

 yielded no fossils, but in all probability they are on the same geo- 

 logical horizon with the Silurian rocks of Cavan, Monaghan, and 

 Armagh. The Yellowish Grits and Conglomerates rest on the 

 denuded edges of the Lower Silurian beds, and in places they are 

 seen to pass up into the Carboniferous Limestone. They are re- 

 garded by Mr. Symes as of Carboniferous age, an opinion in which 

 Professor Hull concurs. Mr. Baily furnishes a list of fossils from 

 the Carboniferous rocks of the area. 



Separating the area into districts, the authors give a detailed 

 description of each. 



Three-fourths of it is covered with a thick mantle of Drift, which 

 is divisible into Boulder-clay and Eskers. The Boulder-clay is for 

 the most part of local origin. 



The tortuous ridges of gravel called Eskers are composed of sand, 

 gravel, and large boulders, running generally in a north-east and 

 south-west direction. Tables of supposed ice strias are given. 



in. — Proceedings of the Bristol Naturalists' Society, 

 Vol. 5. 1870. 



PEOMINENCE has been given to Geology in the papers read 

 before the Bristol Naturalists' Society during the year 1870, 

 and which are published in this the fifth volume of their Pro- 

 ceedings. These papers include the following : — 



1. Temperature and Life in the Deep Sea, being some Account of 

 the Deep-Sea Dredging Expedition in H,M,S, Porcupine, in the 

 Summer of 1869. By W. L, Carpenter, B.Sc, B,A. 



