132 B. B. Neuion — Geology of the Malay Peninsula. 



limestone form a very considerable part. The fossils discovered bj- 

 Mr. Bellamy have enabled the writer to refer the sandstone to 

 a Triassic age, but the horizon of the limestone and slate deposits 

 still remains doubtful. Quite recently, some samples of the lime- 

 stone wei'e submitted to the writer for microscopical examination 

 by Mr. Archibald A. Swan, which his brother, Mr. R. M. W. Swan, 

 F.G.S., had collected and sent home from the River Tui District ; but 

 they, unfortunately, exhibit no organic structures, and are therefore 

 practically useless for determining their period of deposition. This 

 limestone^ is of blackish colour, very much fissured with calcite 

 and quartz, and possessing slickensided surfaces ; a microscopical 

 section with the aid of polarized light exhibiting the brilliant 

 coloration of its partial siliceous structure. In the neighbourhood 

 of the quartz veins, gold, blende, stibnite, and galena are more or 

 less observable. It occurs in a basin-shaped area situated on the 

 upturned edges of contorted slates of unknown age, which themselves 

 rest on a granite base. It is more than probable that this limestone 

 may crop out elsewhere in the neighbourhood of a less crystalline 

 character, and with palajontological features ; but until such a dis- 

 covery takes place it is premature to assume its definite geological 

 age. Should it ultimately prove to be of Carboniferous age, then 

 it would probably form a continuation of that limestone found in 

 Sumatra (Padang) which has yielded to Brady ^ and other authors 

 the foraminiferal genus of Schwagerina ( = Fusulina of Brady). 



In referring again to the sandstone rocks of the Malay Peninsula 

 it may be mentioned that they represent part of the great Triassic 

 development which is such an important feature in the geological 

 structure of Eastern Asia, and which extends through European 

 countries to Northern Africa, thence to Asia Minor, the Himalayas, 

 and to portions of the Chinese Empire, Japan, and Siberia. It is 

 found also in the East Indian Archipelago, especially Sumatra, 

 Eotti, and Timor ; and, moreover, it is present in New Caledonia 

 and New Zealand. ' In all these regions the occurrence of Triassic 

 rocks has been accurately demonstrated by the palseontological 

 investigations of Stoliczka, Griesbach, Volz, Koken, Eugene 

 Deslongchamps, Rothpletz, Naumann, Zittel, Loczy, and others. 



Neolithic Implement. — -Whilst writing on the geology of the 

 Malay Peninsula, it may not be out of place to allude to a Neolithic 

 implement from that country which was presented to the Geological 

 Department of the British Museum by Mr. W. Leonard Braddon, 

 M.R.C.S., diiring the latter part of 1896. Two examples exist of 



1 Specimens of the limestoue have been presented to the Mineral Department 

 of the British Museum (Nat. Hist.) by Mr. A. A. Swan, a few examples being 

 retained for reference in the Geological Department. 



2 H. B. Brady, " On some Fossil Foraminifera from the West Coast District, 

 Sumatra" : Geol. Mag., 1875, p. 537, pi. xiii, fig. 6. 



^ See Lapparent's map illustrating the Triassic distribution, " Traite de Geologie." 

 4th ed. (1900), p. 1042. 



