Reviews—Foote’s Stone Implements in Madras, &c. 503 
‘ The portion of the Coalfield which lies between Dudley and Stour- 
bridge is divided into two irregular basins by the Netherton anti- 
clinal, which runs north-east and south-west for about three miles 
from Netherton to the Lye Waste. The Thick and other coals crop 
round this local elevation in continuous lines. The outcrops of the 
Thick coal are about a quarter of a mile apart in the central portion 
of the ridge. 
‘A mass of Basalt shows itself on the axis of this anticlinal a 
little south of Netherton, but has obviously had no more effect in 
disturbing the beds there than in other places. ‘The greatest dis- 
turbance has been produced at the Lye Waste,* where some of the 
Ludlow rock, with its included limestone, shows itself at the present 
surface, and the Thick coal just east of it was tilted into a vertical 
or even an inverted position. 
‘From Netherton and Brierley Hill and the Old Park the Coal- 
measures dip gently towards the west till they are cut off by the 
Kingswinford boundary fault. From Dudley Wood and Cradley 
they appear to dip regularly but gently towards the south till they 
are covered by the Permian beds which form the high ground of the 
Clent Hills and Frankley Beeches. 
‘Thus the southern end of the coalfield seems to be covered by 
the Permian beds, resting in apparent (but only apparent) confor- 
mity t on the Coal-measures ; while the northern end seems to be 
covered unconformably by the Triassic beds. On the east and west 
the coalfield is bounded by long down-throw faults, which bring in 
the Permian and Triassic beds variously against the Coal-measures. 
Other faults have been traced in these beds themselves, in the coun- 
try both east and west of the coalfield. 
‘It is probable that many of these faults may have originated at 
different periods, and almost certain that in none of them has the 
whole amount of throw been produced at once. They are the result 
of slow creeping movements in the rocks at the different periods 
when the district has been affected by those disturbing influences, 
of which we see the external symptoms at the present day in the 
occurrence of earthquakes.’ . 
REVIEWS. 
is 
I. On THE OCCURRENCE OF STONE IMPLEMENTS IN LATERITIC 
ForMATIONS IN VARIOUS PARTS OF Mapras AnD Nortu Arcor 
Districts. By R. Bruce Foore, Geological Survey of India. 
8vo. Madras, 1865; pp. 42, 29 plates. 
LARGE series of stone implements, collected by Mr. Foote, 
Dr. Oldham, Mr. King, Dr. Cornish, Mr. Fraser, and Mr. 
W.R. Robinson, at forty-seven places in the districts above indi- 
* A good section across this part of the anticlinal, showing the outcrop of the 
lower coals, was exhibited in the cutting of the Birmingham and Stourbridge rail- 
road just north of this place, 
{ The proper definition of unconformability is ‘ The upper group of beds resting 
on an eroded surface of the lower group.’ 
