54 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jan. 5, 



far more so than those which I obtained many years ago at Bourne- 

 mouth*. A fine collection has been made by Mr. W. R, Brodie, 

 and is now deposited in the Museum at Dorchester. It is to be 

 regretted that this remnant of our Tertiary flora has not yet been 

 figured or described, but there appears to be a considerable difficulty 

 in determining the species. This, however, is more desirable, inas- 

 much as a large number of plants have been procured in different 

 parts of the series, both above and below the London Clay, and, in 

 many cases, they appear to belong to distinct groups. 



In one of the pits in the neighbourhood of Corfe an unusually 

 rich bed of pipe-clay has lately been found. 



4. On the Geology of JjABVAsf. By J. Motley, Esq. 



[Communicated by Sir H. De la Beche, F.G.S,] 



[Abstract.] 



The Island of Labuan is composed of alternating beds of clays and 

 sandstones, the former sometimes containing ironstone. Coal-seams 

 are found in several places, and appear to be associated in groups. 

 The principal beds of coal occur in the northern part of the island, 

 between two ridges of sandstone hills, one of which, the most south- 

 erly and in some places upwards of 300 feet high, runs from the South 

 Bluff of Tanjong Kubong (near the northern extremity of the island) 

 in a S.S.W. direction to Luke Point on the western coast ; and the 

 second ridge, less regular, though at places higher than the first, 

 commences a few hundred yards to the north of this Bluff, and runs 

 parallel to the first ridge towards Heath Point. The beds dip con- 

 formably to the N.N.W., at angles varying from about 25° (at 

 Tanjong Kubong) to about 70° (at Sawangan Pagar). The following 

 is the succession of beds (in ascending series) seen in the cliffs at 

 Tanjong Kubong, going northward from South Kubong Bluff: — 



1. Blue shale, including many extremely thin layers of very argillaceous sand- 

 stone ; with indistinct traces of shells^ : — probably 50 or 60 yards thick. 



feet. in. 



2. Coarse white sandstone 10 



3. Very coarse conglomerate of water-worn pebbles of quartz, coal, hard 



red sandstone, white sandstone, and haematite, cemented by siliceous 

 oxide of iron 3 



4. Sandstone 12 



5. Coaly sandstone with quartz pebbles 4 



6. White sandstone, with pebbles of coal, sandstone, and blue shale, the 



last still containing traces of fossil leaves 21 



7. Hard reddish sandstone 1 6 



8. Hard, close, white sandstone 9 6 



* Proceedings of the Geological Society, vol. iii. p. 592. 



t This paper has been printed in full in the ' Journal of the Indian Archipelago,' 

 vol. vi. No. 10. October 1852. 



t Fragments of shells, that apparently belong to one species of small bivalve, 

 nearly orbicular, very thin, and smooth. 



