164 



GEOLOGY OF PULO PINANG, * 



the formation round Pinang, will be found entirely primitive, thougli 

 feome of the rocks have very little of the appearance of that class. The 

 total absencfe of organic remains of any kind, the great inclination of the 

 strata, and their immediate connection with granite, I think, lead to this 

 conclusion. The accompanying geological sections will exhibit at one view 

 the succession and arrangement of the strata. In the direction south and 

 north from Pulo Rimau to Pulo Soonting, a distance of thirty-five miles, 

 we first find granite, then limestone resting on argillaceous rock, then 

 argillaceous schist, and again granite. In the direction from west to east, 

 from Saddle Island to Satta Kaivang, a distance of fourteen miles, we find 

 argillaceous schist, then granite, then argillaceous schist, and again granite. 



Should the investigation not prove valuable in a geological point of 

 view, it has at least extended our knowledge of the resources of Pinang, 

 by the discovery of the existence of two valuable mineral substances — 

 limestone, including marble, and iron ore, which, should this station ever 

 recover its former importance in commerce, may be of considerable utility, 



Pinang, October 18, 1831. 



SUPPLEMENTARY NOTE ON THE GEOLOGY OF THE ELEPHANT 

 ROCK, IN THE QUEDAH COUNTRY. 



During a visit which I made in November last to the capital of 

 Quedah, I had an opportunity of examining a remarkable rock, called by 

 the Natives Gunong Giriyan, but better known by the name of " the 

 Elephant," given to it by navigators, by whom it is reckoned an excellent 

 land mark. As it has not been hitherto described, and as it is in some 

 measure connected with my former paper, I hope the following brief 

 description of it may not be uninteresting to the Society. 



