'Transactions of the Bombay Geographical Society, from September 1850 to June 1852. Edited by the Secretary. Volume X.' [‎203] (336/458)

FRESH WATER BEDS.
203
16 th ^
1 _ ot!l « tint 11,:
Jviousl y a siijltt
59 an( l tlie a J
claimed gromli,
a position l;
: a fragment n|
.d represented H
I is about tliirtji
f tliis asseeniw
ovel of c.
e three beds oft
tracing lower i 1
e stratified beist
so that ii® 1
he melted Md 1,
in marks of reeds and grasses—I have not met in with any animap
remains- The seventh of rhe beds can be traced for about 200 feet to the
south, and 100 to the northward of the rest: here my operations
cease d—beyond this the strata are conspicuous, but the intruded trap
is no longer traceable on either side. The whole mass is surmounted
by a cap or mantle of greenstone forming the ridge on which my house of
Balcairn stands, and that running along to the east of the Society’s
Gardens. It is tossed about and then tilted up about 400 yards
to the southward of my bouse, the crop retiring from the sea shore,
and crossing to the westward : to the northward again the beds
exhibited by the edge of Sewree Hill, and all across the village
O
of Sewree up to the base of the chert rock (44) on which the fort
is built, itself obviously a mass of fused strata, probably of older
date and lower position subjected to a much higher temperature than
that by which the external crusts of the other beds have alone been
affected, the yellow stratified mass under discussion (I shall come to
the Sewree Fort chert by and bye) is found in wells all along the
back of the village and fort, and so in others along the line of the public
road at the base of the hill to the westward. This is surmounted by
a mass of trap some forty feet thick, when a second bed follows this
up to the eastward. It is traceable along the face of the hill from the
Police Chowkee to where the Parell joins the Sion and Matoonga road,
and here it has everywhere been pierced by wells, and abundance of
water found. I am not prepared to say whether the trap has been
.here intruded or not amongst pre-existing beds, or whether there be
two independent formations, or one split in two. The two just exa
mined seem to unite about half a mile farther on, where they are either
joined or closely approached by that already described as the Chinch-
poogly and Parell Hill bed, and passing through the valley of thegardens.
The rock is from henceforth covered over by a thick mass of marine
alluvium. All these beds, especially the lower ones, are remarkable for
the abundance of water contained in them—the outcrop of that next to
or beneath the level of high-water mark may be traced for more than a
mile by the dampness of the ground, or the grass and rushes that pre
sent themselves at the surface, a large growth of which makes its ap
pearance all along the sea shore. In a break during the rainy season
after a week of fair weather, when there is not a drop of superficial