222 
Analyses of Boolcs. 
produce of the mines may he about 120,000 Rs. The natives appear to thin]; they 
are diminishing in value, and Captain Franklin concludes (from the limited extent 
of the matrix! with reason. 
The Bangapilii mines in the south of India nppear to Captain Franklin, from Drs. 
Heyne and Voysey’s descriptions, to correspond exactly in geological features with 
these; and he considers the including rock to be the new red sandstone. Dr. Voysey, 
however, he states, terms the rock “ the sandstone breccia of the clay slate forma- 
tion.” Captain F. thinks the term breccia objectionable (as it doubtless is), the 
fragments being rounded; and with respect to the “clay slate formation,” he objects 
to it, as Dr. Voysey himself allows that he does not mean the thonschlefer of Werner, 
to which rock alone the term clay slate is applicable, in Captain F.'s opinion*. 
It has been supposed, that diamonds are always found at the same level above the 
sea. To enable observers to judge whether this be universally true, a list is given 
cf the elevation of the several mines, which range from 1250 to 1500 feet above the 
sea. In the conclusion of his paper, Captain Franklin enters into some speculations 
on the.origin of the diamond, which he supposes may be owing to the action, under 
extraordinary pressure, of subterraneous heat on vegetable matter. We think that 
the facts are yet wanting, on which to build even a plausible hypothesis of the origin 
of tliis mineral. 
'he Geological and Mineralogicnl Structure of the Hills of Sltabaldi, Nag- 
immediate vicinity. By the late H. W. Voysey, Esq. 11. it/. 67 th Foot, 
VI. On the 
pur, and its immediate vicinity, 
pp. 123 to 127. 
This paper is a short one, and we shall therefore give it at full length in a future 
number. 
VII. Observations on the Geological Appearances and General Features of portions 
of the Malayan Peninsula and of the Countries lying betwixt it and 18” North Lati- 
tude. By Captain James Low, M. N. I. pp. 128 to 162. 
“ The general features of the Indo-Chinese regions seem to be alternate ranges 
of hills, stretching nearly north and south, and conforming- occasionally to the gen- 
eral direction of peninsular tracts, and of valleys of various breadth, through which 
flow large rivers, ° 
“ The principal ranges are, that which divides Assam from Ava ; the Siamese 
and Aya range ; the Siamese and Cambojan ; and lastly the Camhojan and Auam 
range. Jbe broadest Talley seems to be that of Ava, and the narrowest the 
vEmboj^n> 
j5.Vt.fJ C T eA r n " tries > * e touriwit vegetation is opposed to the accnrate 
researches of the geologist ; add to which pobt.cal jealousy here increases the diffi- 
cu ty. Captain Low concludes then that bis observations, limited though they are 
will not be unacceptable* & j > 
His account commences with the friendly state Perak in the Malayan Peninsula, 
xnntaH '"Jf,' 4 ? *PP e “’* to c °“S 13t ol “ of 15 miles, to which eastward 
succeeds the tract of mountains that runs N. and S. and seems to form the back- 
bone as it were of Malacca. Of the plains nothing- has been learned except that they 
are alluvial, but die Bountin Islands off the coast are granite. Of the mountains the 
only particulars collected are their produce in gold, tin, and antimony State 
is also found ; and from the accounts of natives it is supposed coal may be There 
are several hot springs. 3 
Proceeding northward, we arrive at Penang, composed of a grey desquamating 
granite. On the shores of several of the small islands lying near if there is found 
a conglomerate tinged with oxyde of iron. But no particular account of Z ch“mc- 
4 00 r jf a i T S y ,n ', rh . e peninsular range is in the latitude of Penang about 
400° feet high. It is also rich in tin, and it is reported that there is an extemsire 
table laud in the boso n of the range situated N. E. from Penan"-. extensile 
That part of the Cedda coast opposite Penan#, is remarkable for mminrie 
shells found several miles inland. appears to he found in Several Z , 
The Cedda peak, termed by the natives Ghnoug CW ? 5 the m-imtal Su ' 
terest. It is about 3000 feet above the sea, which washes part of its base J Its sum 
nnt has not been yet explored by European foot, owing l tl^otyofthest 
limited ^toft^ examination of a very 
occasionally to fall swV e 0t , t0 l,e J vondtr V (J ? ta at his views should be found 
mistake no y t has in narrimta Z var ,' et >’ of nature. Macculloch, if we 
beyond e the t boMdaries'of C Weriim- s^^nic/Ti^Ar! 1 ^ 1011 ° f ^ te ™ da >’ slate Wuch 
