E. B. Nen-ton — Geology of the Malaij Peninsula. 129 



during tbc following year, but no geological age was assigned to the 

 material. This author likewise contributed a number of papers between 

 1847 and 1851 on the geology of the Malay region, dealing more 

 particularly with that division of it which embraces Singapore and 

 the adjacent islands. He observed that limestone, sandstone, and 

 clays are the predominating stratified rocks along the western coast 

 from Junk-Ceylon to Penang ; and that argillo-micaceous and argil- 

 laceous schists, associated with sandstones and common clays and 

 shales of various colours, occur between Southern Selaugor and Johore. 



During 1879 Mr. Patrick Doyle' referred to the granitic rock 

 of the Malay Peninsula as being " overlain generally by sandstone, 

 and frequently also by laterite or cellular ironstone, and to the 

 north by limestone." 



In 1882 Mr. D. D. Daly- mentioned that "the alluvial tin deposits 

 permeate the whole length of the Malayan Peninsula " ; and among 

 other items of geological interest, the occurrence of limestone caves 

 at Batu in Selangor was pointed out. The following year Mr. A. H. 

 Keane ^ remarked that " as far as has been ascertained, the main 

 geological formations [of the Malay Peninsula] would appear to 

 be Lower Devonian sandstones and unfossilized clay-slates, with 

 a basis of stanniferous granite everywhere cropping out. Although 

 no trace has been found of recent volcanic action, there are several 

 isolated and unstratified limestone masses from oOO to 2,000 feet 

 high, of a highly crystallised character, with no fossils of any kind." 

 In the same year M. J.-E. de la Croix' alluded to the presence of 

 three groups of rocks in the Perak district of the Malay Peninsula : 

 (a) the eruptive series, which constitute the mountain masses ; (6) the 

 sedimentary beds, which occur at intervals in detached fragments ; 

 (c) the alluvium formation, which completely covers the plains. 

 The sedimentary strata are represented by sandstone and limestone, 

 both of which are unfossiliferous and consequently of unknown age, 

 although stated to be anterior to the granites, which are eruptive and 

 metamorphosed. 



In 1884: the late Eev. J. E. Tenison- Woods'^ referred to a "Paleeozoic 



Geography and Geology of the Malay Peninsula " : Journ. Indian Archipela^'". 

 vol. ii (1848), pp. 83-138. " Notices of the Geology of the East Coast of Johore " : 

 Journ. Indian Archipelago, vol. ii (1848), p. Q2o. ' "The Rocks of Pulo Ubin "' : 

 Verhandel. Bataviaasch Genootsch. Kunst, 'Wotcnschap., vol. xxii (1849) 

 [read 1847], pp. 3-43. "Five Days in Nauiug" : Jouru. Indian Archipelago,, 

 vol. iii (1849), p. 282. "Notices of the Geology of the Straits of Singapore": 

 Quart. Journ. Geol. Soc, vol. vii (1851), pp. 310-344, pi. xviii (=geological map). 



1 Patrick Doyle, "On some Tin-deposits of the Malayan Peninsula": Quart. 

 Journ. Geol. Soc, vol. xx.vv (1879), p. 229. 



^ D. D. Daly, " Surveys and Explorations in the Native States of the Malay 

 Peninsula " : Proe. Roy. Geogr. Soc, n.s., vol. iv (1882), pp. 393-412. 



^ A. II. Keane: " Malay Peninsula," an article in ihi' Encyelopadia Britannica, 

 9th ed. (1883), vol. xv, p. 321. 



* J.-E. do la Croix, " Le Royaumc dePcrak" : Bull. Soc. Geogr. Paris, scr. vii, 

 vol. iv (1883), pp. 342-348, with a plate containing geological map and sections. 



8 J. E. Tenison- Woods, " Geology of the Malaysan I'eniusula " : Nature, vol. xxx 

 (1884), p. 76. " Phy.sical Geography of the Malaysan Peninsula": Naturr, 

 vol. xxxi (1884), p. 152. "The Geology of Malaysia, Southern China, etc.": 

 Nature, vol. xxxiii (1886), p. 231. 



DECADE IV. — VOL. YIII. — NO. III. 9 



