1838.] across India — and down the East Coasts. 11 



ed by Mr. Jones, in addition to the well known spring at Mongir. In 

 Assam, on the opposite side of the delta they are also common in the 

 same line in several situations along the foot of the Nugn mountains, 

 thus confirming other indications that have been adduced of the volcanic 

 agency of this extensive band throughout its extent on both sides of the 

 Ganges. 



The other band now to be noticed is a continuation of that which has 

 been described by Von Buch, as belonging to the volcanic train of the 

 Moluccas; but it has been extended no farther by him in the direction in 

 which we are now to trace it, than Barren Island in 12° 19' N. lat. in 

 the Bay of Bengal*. 



The island of Narcandam situated in 13° 22' N. lat. is a volcanic cone 

 raised to the height of seven or eight hundred feet. The annexed out- 

 line, reduced from a sketch made by William Griffith, Esq., while 



passing within half a mile of the shore, shews the figure of the cone ; the 

 upper part of which is quite naked, presenting lines such as were 

 doubtlessly formed by lava currents descending from the crater to the 

 base, which last is covered with vegetation. No soundings are to be 

 found at the distance of half a mile from the shore. 



The next volcanic islands to be observed, are those which form a small 

 archipelago on the Arracan coast. The largest of these is JRambree, 

 described in the fourth volume of the Asiatic Journal by the late Lieut. 

 Foley. It is situated close to the low marshy coast of Arracan, and 

 is formed of ranges of mountains extending in the direction of north- 

 northwest, varying in height from five to fifteen hundred feet ; one 

 peak named Jeeka, is raised to an elevation of 3000 feet above the sea. 

 The plains from which the ridges ascend slope down to the sea with the 

 occasional interruption of low ridges containing basin -like cavities large 

 enough for the cultivation of rice. The highest portions of the plain 

 are composed of shingle, the same as the recent breach, a circumstance 

 which may be observed on removing the soil. 



Earthy cones covered merely by a green sward, and situated gene- 

 rally in marshy grounds are ranged along the shores of Rambree as well 

 as the adjoining islands and coast of Arracan: their naked appearance, 



*. See Plate III. Lyell's Principles Geol. vol, XI. 4th ed. 



