370 Reviews—Geology in the Field. - 
II.—Gronroey 1x tHe Fierp. The Jubilee Volume of the Geologists’ 
Association (1858-1908).* Edited by H. W. Moncrron and R. 8. 
Herries. Part III. pp. 433-660, with 6 plates. London: 
Edward Stanford, 1910. Price 5s. net. 
N the March Number of the Gerotogrcan Magazine we called 
attention to the issue of the second part of this Jubilee Volume. 
The third part has now been received, and it contains nine articles. 
‘The Weald” is dealt with by Mr. Herries, who first briefly 
discusses the great anticline, the successive stages of elevation, the 
river-systems, and the denudation. The main characters of the 
different formations from the Purbeck Beds to the Upper Greensand 
are then described, and some account is given of Pleistocene and 
Recent deposits. Finally the author sums up the knowledge acquired 
by the various deep borings. 
‘Northamptonshire (including contiguous parts of Rutland and 
Warwickshire)” is the title of the second essay, contributed by 
Mr. Beeby Thompson, who likewise refers to the local deep borings, 
and thus deals briefly with Archean and other formations not exposed 
at the surface. Those which are to be seen in the field include the 
members of the Jurassic Series from the Lower Lias to the Oxford 
Clay, together with sundry Pleistocene and Recent deposits. In the 
higher stages of the Lower Lias the author recognizes in upward 
succession the following Ammonite-zones: Jamesoni, Pettos (described 
by him in 1899), Lbex, Henleyi, and Capricornus. The Upper lias 
is divided into ‘‘ eight subsidiary zones, or sets of beds”, and is 
covered conformably by the representatives of the Inferior Oolite. 
A zealous collector of fossils, Mr. Thompson has added largely to our 
knowledge of the paleontology of the different strata which occur in 
Northamptonshire. 
_ ‘Tiincolnshire”’ is described by Mr. Jukes-Browne, who took a 
considerable share in the geological survey of the county. Strata of 
Triassic age are first described, and a record of the Boultham boring, 
for the water supply of Lincoln, is given on the authority of 
Mr. Henry Preston. A good supply of water is stated to have been 
obtained from the Keuper Sandstones at the depth of 1563 feet. This 
supply, though abundant, proved to be saline; but we are informed 
by Mr. Preston that a really good supply for Lincoln has since been 
obtained from the Bunter near Retford. The author gives particulars 
of the several divisions of the Lias, of the Inferior Oolite Series with 
its basal ironstone worked at Greetwell, of the higher Jurassic strata 
up to the Kimeridge Clay, and of the Cretaceous Series. After 
describing the Glacial Drifts he expresses his dissent from the view 
of Mr. Harmer that the Honington and Lincoln gaps were formed 
during the Glacial epoch by the overflow of a lake caused by the ~ 
advance of an ice-sheet. ; j 
‘Nottinghamshire ”’ is described by Professor J. W. Carr, who 
deals with strata from the Millstone Grit to the Lower Lias, a series 
marked by great unconformity at the base of the Permian. The 
author remarks that ‘‘ Where the junction of the Permian and Trias 
is seen there appears to be a perfectly conformable passage from the 
one to the other, but the Triassic strata rest in succession on all the 
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