210 Geological Society : — 



These trees stand on the 6-inch coal in Group XV. One (Sigillaria 

 Brownii) has yielded indications of six: skeletons of Dendrerpeton 

 acad'mnum (one probably perfect), a jaw of a new species, two 

 skeletons of Hylonomus Lyellii, one of //. Wymani, a number of 

 specimens of Pupa vetusta and Xylobius Sigillaria, and some rem- 

 nants of Insects (in coprolites). 



In a lower bed (1217 feet beneath — in Group VIII.), a Stigma- 

 rian under-clay 7 feet thick, the Pupa was found abundantly in a 

 thickness of 2 inches — with fragments of Reptilian bones. The 

 coal-seams between the trees and this bed indicate that this Pupa 

 must have existed during the growth and burial of at least twenty 

 forests. 



4. " On a Volcanic Phenomenon observed at Manilla, Philippine 

 Isles." By J. G. Veitch, Esq. In a Letter to Dr. J. D. Hooker, 

 F.G.S. 



On the 1st of May 1861, the River Pasig, at Manilla, from 15 to 

 18 feet deep, was disturbed by a violent ebullition from 6 to 10 a.m. 

 for a distance extending to a quarter of a mile. Its temperature 

 here was 100° to 105° Fahr. (elsewhere 80°). A bank of fetid mud 

 was thrown up several feet above the water, and had a temperature 

 of 60° to 65° only. 



The Chairman remarked that a bank of mud, 30 feet high, and 

 more than a mile long, had lately been thrown up in the southern 

 portion of the Caspian. 



November 20, 1861.— Sir R. I. Murchison, V.P.G.S., in the Chair. 



The following communications were read : — 

 1. "On the Bovey Basin, Devonshire." By J. H. Key, Esq. 

 The author first described the physical features of the Bovey 

 Basin, and then the strata, as proved by borings and diggings for 

 clay and lignite. Having pointed out the evidences that exist of 

 the basin having once been a lake in which the several strata of clay, 

 sand, lignite, gravel, &c. were deposited, and having considered 

 the probable conditions of such a lake having been gradually filled 

 up by fiuviatile deposits brought down from neighbouring granitic 

 hills, the author remarked: — 1st. that the Bovey deposits are 

 composed of materials almost identical with the component parts of 

 granite. 2. The strata run, for the most part, parallel with the 

 outline of the marginal hills, and dip from the sides towards the 

 centre, often thinning away in that direction. 3. The finer mate- 

 rial is deposited towards the sides, and the coarser towards the centre. 

 4. Where the basin is contracted the finer beds often disappear, 

 but thicken where the basin widens. 5. That the upper beds of the 

 northern part are coarser than those of the middle and lower portions. 

 6. On the eastern side the fine-clay beds are more developed than on 

 the western side. 7. The various beds run in the direction of, and 

 seem to point to, the River Bovey as the source from w T hence they 

 were derived ; but the old outlet of the lake was towards Torbay, 

 and not along the Teign as it is at present. Some observations on 



