Reviews—Geological Survey Summary of Progress for 1905. 41 
‘also; a large outlier still remains in the county of Shropshire. Nor is 
it likely that the north-western counties escaped the more general 
submergence of England which ensued in Cretaceous times.” We 
take exception to these views and ask for the proofs or evidence. 
Granted the continental conditions, or rather the inland salt sea, of 
Trias times, out of which the Lake Hills and the Higher Pennines 
above 800 feet appeared, what evidence is there that these areas were 
ever again submerged? The crevices and caverns of the Carboniferous 
Limestone contain no relics of Jurassic or Cretaceous age, as is the case 
in Somersetshire. No outliers of Secondary rocks are found in the 
Pennine area or the north-west counties of England, or occur nearly 
as high above sea-level as the highest Triassic beds of the Midlands. 
The large sand and clay pits of Staffordshire and Derbyshire contain 
nothing later than Triassic material and Glacial drift. One cavern in 
Derbyshire alone has yielded bones of Pliocene animals, but this fact 
does not bear on the question of a depression beneath the sea to over 
2,000 feet in the Midlands. Consider the height above O.D. at which 
Jurassic deposits are found elsewhere, even the two nearest to the 
area, the Shropshire and Needwood forest outliers. They are both at 
a much lower level even than the highest Triassic beds. In connection 
with this subject it would have been of importance and interest if the 
authors of the memoir had discussed the limits above O.D. of the Trias 
of the district. There is a long and important section on Glacial and 
other superficial deposits. The area is classical and contains the 
highest bed of marine shells in England, 1,200 feet above sea-level. 
The Memoir is a useful introduction to the geology of the area; the 
illustration and sections are helpful to the geological student, and give 
him a graphic view of the tectonic structure of the district. 
Wis Ee 
II.—Summary or Progress oF THE GroLoGicAL SURVEY OF THE 
Unrrep Kryepom For 1905. pp. 209, with 4 plates and 3 text- 
illustrations. Price ls. 
FYNHIS is somewhat late in issue, considering that the far more 
elaborate Report of the Transvaal Geological Survey for the same 
syear reached us some weeks ago. The present work contains 
particulars of the field-work in Derbyshire and Nottinghamshire, in 
Cornwall, Carmarthenshire, and Pembrokeshire, in the North and 
West Highlands of Scotland, and around Glasgow and Airdrie. ‘The 
Survey of Ireland was severed from that of Great Britain during the 
‘early part of the year, so there has not been much to record about it. 
Among notable contributions to this work are Mr. J. A. Howe’s 
‘report on Road-stones; Dr. Flett’s descriptions of Lewisian rocks ; 
Mr. Barron’s account of recent excavations in London; and Mr. H. A. 
-Allen’s Catalogue of Types and Figured Specimens of British Lamelli- 
branchiata from the Oolites, preserved in the Museum of Practical 
Geology. 
