V. Ball — Volcanos of the Bay of Bengal. 19 



rises at 45° or even more. If the elevation of the cone in his time 

 were only so much, then, since he states that this was also the 

 elevation of the outer walls or amphitheatre, both must have in- 

 creased pari passu. This view is of course untenable, and we are 

 forced to believe that Captain Miller only gave a rough guess. His 

 remarks on the vegetation are quite inconsistent with one another, 

 for he says, — " There is no vegetation of any kind within the 

 amphitheatre, but a few small trees are found on other parts of the 

 island, which, however barren it may have been at one time, is now 

 well wooded." 



Dr. Daubeny, in his desci'iption of Barren Island, though quoting 

 from Lieutenant Colebrooke, gives the elevation of the cone at 

 4,000 feet, which must, I think, have been due to a clerical error. 

 A somewhat modified reproduction of the original sketch is given. 



Mr. Scrope, in his work on Volcanos (2nd edition, Lond., 1862), 

 writes regarding Barren Island : " This permanently active volcano 

 is a eone about 4,000 feet high, rising in the centre of a circular 

 cliff range, which entirely surrounds it except at one point where 

 the sea has broken in." Though the authority is not given, it seems 

 probable that this account is derived from Dr. Daubeney's, as the 

 elevation is not given at 4,000 feet in any other work. 



In 1846 the island appears to have been visited by the Danish 

 corvette Galatliea, but the only record of the fact is said to be an 

 inscription on a rock on the island — " GALATHEA, 1846." This we 

 failed to observe. 



In the Bombay Times for July, 1852, on the authority of Dr. Buist, 

 it is stated that the volcano was then very active, but I have not 

 been able to refer to the original account. 



The chief points in the accounts subsequent to the above will 

 be found incorporated below (see the table on pp. 20, 21). Dr. 

 Play fair, Von Liebig, and the Andaman Committee agree in es- 

 timating the angle of the cone at 40° to 45°, and the elevation at 

 from 975 to 980 feet. 



From the preceding records we may gather the following. The 

 volcano has probably not been in violent eruption since the years 

 which closed the last and commenced the present century. 1 The 

 lava-flow which stretches from the entrance open to the sea to the base 

 of the cone was probably poured out during this period, and raised 

 the level of the encircling valley some 40 feet above its elevation 

 in 1789, when Blair saw it. He makes no mention of a lava-stream 

 in his time. If it did not exist then, it cannot — as has been supposed 

 by some — have been instrumental in the formation of the entrance. 

 That this fissure was probably due to other causes we shall presently 

 see. 



From Lieutenant Wales' figure it is apparent that no material 

 change has taken place in the general configuration, and as it has been 

 shown that 1,800 feet cannot have been the true height, and about 

 920 probably was, no great alteration in the elevation is likely to 

 have taken place. 

 1 The statement " very active " from the Bombay Times is too vague for reliance. 



