— Geology and Mineralogy. 151 
(13.) Other extensive trappean outflows in the Rajmahal region, 
west of the delta of the Ganges, 2,000 feet thick, ene from 
Jurassic to Upper Cretaceous in age, but suppos y some to 
ave been cotemporaneous with the Deccan onttows peciae “es Tittle 
petrological distinction between the traps” of t © regions ; 
and still others in the Sylhet region, east of the Fe ap overlaid by 
oe rocks, 
A line of eruptive rocks on the Upper Indus, from Kargil 
Se rpeed, “ait Ss nying the Eocene strata “from end to end.” 
ve indicate some of the bsg oints which the reader will 
find Sere in full in the volum 
With regard to the movements producing the Himalayas, the 
work makes the following remarks in the brief geological sum- 
cote ~~ which the work commences (pages lvi, lvii). 
,in closing this notice, the following general remarks 
(from Sad lvi, lvii) on the Origin of the Himalayas.—During 
the interval that has elapsed since Eocene times, whilst no 
il 
gigantic forces, to which the contortion and folding of the 
Himalayas and other Extra-peninsular mountains are due, must 
have been eee he Sub-Himalayan KHocene beds were 
area is but rarely affected by Ba le may indicate that the 
forces, to which the elevation and contortion of the Him malayas 
of Peat tion. 
In Sind and the Suleman ranges, there is oe probability 
that some movement took place during Miocene and Pliocene 
times. Some slight unconformity between aa elsewhere con- 
formable, and the absence of different groups in parts of the coun- 
