BY THE REV. J. E. TENISON-WOODS, F.G.S., &C. 693 



was informed by the natives that the shore-line is very rapidly 

 changing its contour. Many capes and points disappear during 

 the rainy season, especially on the volcanic island which is com- 

 posed of loose ash. In the Geological Essay of Draasch already 

 referred to, the author puts forth well-grounded reasons for sup- 

 posing the existence of thermal springs and subterranean affluents. 

 Considering the great height of the mountains and ridges all 

 round the lake, and the abrupt way in which some of them abut 

 upon it, no doubt there must be a very extensive soakage into the 

 bottom of the basin. At the time of my visit, which was at the 

 close of an unusually dry season during which there had not been 

 a drop of rain for nearly three months, there was a not inconsi- 

 derable stream of water flowing into the lake at the place where 

 1 embarked. This was on the low flat ground on the north-east 

 side, at the nearest point to Mount Maquilin. 



The depth of the Lake of Bombon is considei-able considering 

 its small extent. The deepest soundings are found on the south- 

 east side where Mount Macolod abuts in precipitous cliffs upon the 

 water. Here a depth of 106 fathoms has been obtained at a 

 short distance from the shore. The soundings to the west and 

 north are between 30 and 80 fathoms, and generally the lake is 

 deeper towards the west than to the north. I noticed as we landed 

 upon the island crater that there were several marine remains 

 on the shore, such as dead coral and fragments of sea shells 

 similar to what is generally seen on coral reefs in the open ocean. 



Besides the island crater there are two or three little islands in 

 the lake on the north-east of the strait, which separates the 

 volcano from the Cape of De Lipa. The largest of these is 

 Napayong, which is nearly a mile long and a third of iis length 

 wide. One side of this island ends in abrupt precipices of tufa, 

 350 ft. above the surface of the water. There are three other 

 little islands and some rocks. These islands are generally preci- 

 pitous, yet when the volcano is sufliciently tranquil they are 

 inhabited, and in part cultivated. Cotton, Manila hemp, and 

 bananas are grown, and a few live stock kept. The appearance 

 of these islands is very picturesque, the whole of the precipitous 



