566 Hevietvs — Geological Survey of England and Wales. 

 las 'VIE ^w 3- 



I, — Geological Survey of England and Wales. 



The Geology of the Country South and East of Devizes. 

 By A. J. Jukes-Browne, B.A., F.G.S. pp. 61. (1905. 

 Price Is.) 



IN this memoir, which is accompanied by a geological map 

 (Sheet 282, price Is. Q)d.), very clearly printed in colours, we 

 have a description of a large part of Salisbury Plain, including 

 the War Department land between Tidworth and Bulford, and 

 also of the Vale of Pewsey as far east as Burbage. The general 

 structure of the area is shown in a line of coloured section, engraved 

 at the foot of the map, and by a column of strata, drawn to scale. 

 Beds from the Oxford Clay to the Beading Beds and alluvial 

 deposits are depicted on the map and described in the memoir. 

 There are, however, some missing strata; the Corallian beds, for 

 instance, do not appear at the surface, as they are cut out by a fault ; 

 and there are striking evidences of unconformable overlap or over- 

 step where the Lower Greensand crosses the outcrop of the Portland 

 Beds, and where the Gault and higher Cretaceous rocks extend 

 over the Lower Greensand on to the Jurassic strata. The remnants 

 of Beading Beds rest unconformably on the Upper Chalk. The 

 district is one that was described in part by the old masters, 

 Lonsdale and Fitton, while the country around Devizes is especially 

 associated with the name of William Cunnington, who amassed 

 a rich collection of fossils, many of them now in the British Museum 

 and others in the Devizes Museum. 



Full particulars are given of the strata and their fossils ; the 

 account of the Cretaceous rocks, which occupy most of the area, 

 extending over five of the eleven chaptei's. There are notes also 

 on the economic deposits, including the Seend iron-ore, which is no 

 longer worked, and on the springs and water-supply. 



With the exception of the valley deposits there is very little 

 ' Drift,' the few tracts of clay-with-flints being remarkable over the 

 wide expanse of the Chalk downs. Mr. Jukes-Browne expresses 

 his opinion " that this deposit has been formed almost entirely from 

 Eocene material, and that it only occurs at places where the present 

 surface is not far below the ancient plane of erosion on which the 

 lowest Eocene deposits were laid down." 



IT. — Geological Survey of Canada. By Robert Bell, I.S.O., 

 M.D., D.Sc, LL.D., F.E.S. Summary Eeport for the Calendar 

 Year 1904. 8vo ; pp. 392 and xxxviii, figures and maps. 

 (Ottawa : S. E. Dawson, 1905.) 



THIS report deals in a general way with the operations of the 

 Geological Survey Department for the year ended Slst 

 December, 1904. The first part (pp. i-xxxviii) contains a brief 

 resume of the work carried on during that year at headquarters^ 



