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1847.. VICARY ON THE GEOLOGICAL STRUCTURE OF SINDE. 341
irregular coating of sand resting on the same yellow clay so often alluded
to. Kotree is on the right bank of the Indus opposite to Hyderabad.
Having taken in supplies, I proceeded hence to Ukka-Nag, a
spring of sweet water in the hills, about seventeen miles N.N.W. from
Kotree : thirteen miles of this was over the plain through which the
Indus now finds its way to the sea. I then came upon hills of
small elevation trending N.N.E. and S.S.W. The range here is
composed of isolated hills not exceeding 400 feet above the plain of
the Indus, their apices level with nearly horizontal strata, their
sides abrupt and precipitous, the uppermost beds being in all re-
spects similar to the non-nummulitic rock (No. 6). The valleys or
intervening spaces between these hills have been much disturbed. A
variegated clay abounding with gypsum is of common occurrence,
but contains no fossils. A brown rust-coloured rock is abundantly
distributed on the surface near this, in the form of large rounded
boulders, and the Kotree blacksmiths occasionally visiting this place
select the most promising specimens, and transport them to Kotree
for the manufacture of iron.
Hence, in a northerly direction, I proceeded to Buchera in the
plain of the Indus for about fifteen miles, and the country passed
through held the same character to within half a mile of the base
of the hills : here I found the conglomerate resting on a thin bed of
arenaceous rock which I could not identify, and which reposed upon
No. 7. The conglomerate eventually disappeared beneath the yellow
clay of the plain.
Water was not to be had within the hills at this season of the
year ; I was therefore obliged to continue my journey as far as
Luckee through the plain of the Indus. The Kotree range of hills
terminates nearly west of Majinda, and is succeeded by another
range trending nearly north as far as Sehwan ; the water of this range,
except at Rennie-kote, is salt and unfit for use ; the hills attain con-
siderable elevation (from 600 to 800 feet) above the Indus, towards
which their aspect is very precipitous ; they are the abode of the
true Ibex. Between this range and the Indus there are numerous
low hillocks of aluminiferous clay, from which the Sindees manufac-
ture alum. I was unable to ascertain the exact relation of these clays
with respect to the beds entering into the formation of the more ele-
vated range. The proper time to explore this place would be after
a fall of rain, when water would be obtainable from ponds. — Moved
on to Luckee, which is about sixteen miles to the southward of
Sehwan. The range here approaches the river, and is of easy access.
It is not so high here as further to the southward, and becomes gra-
dually lower in a northerly direction towards Sehwan, where it termi-
nates. The following section will give some idea of the range of
mountain at the Luckee Hot Springs,
Fig. 2.
w.
ladus.
No. 6.
Bed of stream.