V<iicanoe8 in the Bay of Bengal. 347 



impression of its being a conflagration, but saw nothing. 

 Government, on being applied to by the Asiatic Society, in- 

 stituted a careful survey of the coast, but no change in the 

 depth of the soundings or character of the bottom could be 

 discovered. There can, at the same time, remain no reason- 

 able doubt that the exhibition was volcanic, probably a sud- 

 den emission of gas through an aperture or crevice not de- 

 tected by the sounding-line.* •.^/rji't- •« •- i'lt 



The region of recent direct volcanic action Efeems, so- far 

 as we at present know, to terminate with the lower extre- 

 mity of the Delta of the Ganges ; a few hot springs are all 

 we have to indicate the agency of subterranean fire for nearly 

 1000 miles across the peninsula. There are hot springs in 

 the Damoodah Valley, 23° 10' N., in Gangetic India, in 

 Kunowar, in the Lower Himalayas, and near Lohunkund, 

 on the Sutlej. The most notable of these is that at Sar- 

 gunga, near Chota Nagpore, in Central India, where the 

 temperature of the water is 184°: it smells strongly, and 

 seems to be a Harrowgate.t Dr Vosey describes a hot 

 saline spring near Hydrabad, in the Deccan.J In the CJon- 

 can there are no fewer than twelve hot springs betwixt 

 Dasgaum and South Raj pore, and they are supposed to fol- 

 low the line of the great Ghaut chain southward to Ceylon ; 

 the majority occur near the great lines of dislocation. There 

 are two hot springs in Kandeish, and several in Kattiawar ; 

 and Lower Scinde, as we shall presently see, abounds with 

 them., sri;* mo 



Lake Loon'ar, on the Siehal Hills, is the only instance of 

 a volcanic outburst observable in this immense plutonic re- 

 gion. § It is a nearly-circular or oval depression, in a country 

 BfiT J.UI oil J mo-it 



* T<bree accounts, by three different parties, differently situated, of thifl most 

 slh'gular occurrence, are given with great minuteness in the Reports of Pro- 

 ceedings of the Bengal Asiatic Society for February 1843, pp. xxiv., xxv., not 

 indexed. The best account is that of Lieut. Hawkins. 



t Col. Ouseley, Bl. As. Trans., vol. xvii., p. 1. 



\ Second Report on the Geology of Hydrabad. 



§ Malcolmson, London Geological Transactions, 1839. It was first described 

 by Lieut. Alexander, in the Madras Literary Transactions, subsequentJy by Mr 

 Orlebar, in the Bombay Geographical Transactions. 



