6 The Natron Lake of Loonar. [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 — again, as vesicu- 

 lar,trap cavities being some times distant and empty,at others close 

 and rilled 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 laterite, it was co-mingled with that 

 deposit, and where it slopes over the syenite, boulders of that rock 

 were imbedded in its mass — these the Committee should be inform- 

 ed, are merely the personal remarks 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 ? 



b. — What is their commercial value, as now sent? 



c. — Are the suggestions alluded to as under consideration, 



correct in their general principles ? and 



d. — 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. — Bulla. 



2. — Nimuck Dulla. 



3. — Khuppul. 



4. — Puppree. 



5. — Madkhar. 



6. — Bhooskee. 



7. — Travertin. 



8. — Quartz used in glass-making. 



9. — Glass prepared for the manufacture of bangles. 



10. — 3 Bottles of water. 



