6 The Natron Lake of Loo7iar. [no. 1, new series, 
ganized with seams, thick or thin, of chlorite, calcspar, quartz and 
calcedony, in contact with marl — again, it was seen in vertical shells 
containing triangular fragments easily separable — ag&in, as vesicu- 
lar,trap cavities being some times distant and empty, at others close 
and filled with adventitious minerals — again, it was solid, compact, 
and of a leaden black hue — again, it was reddish and ferruginous, 
— again, where it underlies the lateiite, it was co-mingled with that 
deposit, and where it slopes over the syenite, boulders of that rock 
were imbedded in its mas§ — the^e the Committee should be inform- 
ed, are merely the personal remark&>of an inexperienced Geolo- 
gist. The same appearances with <a few exceptions were observed 
at Loonar and in its neighbourhood. It appears to me, as if the 
rocks constituting the supposed crater were too compact, to have 
issued from a sub-aerial volcano, though it is more than probable 
that this was one of the vents of the great eruption of the Trap of 
the Deccan, which was at first effused, it is supposed, under the 
pressure of water. 
The points, to which the attention of the General Committee 
is respectfully solicited in this reference, are the following : — 
a. — What is the exact chemical composition of the several 
salts ? 
h. — What is their commercial value, as now sent? 
c. — Are the suggestions alluded to as under consideration, 
correct in their general principles ? and 
f^.—Can the salts at Loonar be profitably separated from each 
other, and if so, by what process or processes ? 
. — The following specimens are forwarded for examination — 
1. — Dulla. 
2. — Nimuck Dulla. 
3. — Khuppul. 
4. — Puppree. 
6. — Madkhar. 
6. — Bhooskee. 
7. — Travertin. 
8. — Quartz used in glass-making. 
9. — Glass prepared for the manufacture of bangles. 
10. — 3 Bottles of water. 
