132 Scientific Intelligence. 
The finest ores of Banca yield as much as 80 per cent. of metal— 
e common sorts from 40 to 60. The quality of the peninsular ores 
us not been ascertained so arm ; we are not aware that more than 
<a have been ever obta 
i e dwelt, at some talaga on tin, because it is the principal na- 
Bi ancien of the peninsula, which derives from the fact of its being 
the greatest stanniferous tract in the world—an ne ‘economical- 
ly, which has never been sufficiently appreciated. ‘The existence of tin 
in Banca was unknown until 1709, when it was sssnidinatadi discovered. 
Now its produce doubles that of the peninsula, although the. ‘latter has 
a surface 18 times larger. The reason is not a mineralogical’ one: ‘it is 
because in Banca the Chinese are :-sehadibined furthered, “and: protected, 
by a strong government which directly interests itself in their operations. 
Gold is found in ths peninsula, but whether from inferiority of enter- 
prise, or natural deficiency, not in such aeaiieke as in those par rts of 
the adjacent —- of Sumatra and Borneo, where it is Riper 
has not been seen in the undisintegrated state. Copper, silver, and ar- 
senic, have been detected in Banca, but apparently in small poriessn 
‘ an Impression of the Soft 
Parts of an Orthoceras.—The ac- 
companying figure represents a 
specimen from a bed of shale alter+ 
nating with compact limestone, near 
Cincinnati, Ohio, describe by r. 
nthony in the Quart. 7 
of the Geological Society, 1 
. 256. Mr. Anthony ae 
that the Orthocerata of the locality 
were associated with numerous fos- 
sils of the ‘* Hudson river group,” 
and they were remarkably well 
preserved, the Lingulz being erect, | 
as if entombed in the position in 
coated with a black substance, like 
paint; where this was remove 
it appeared rough, almost like sha- 
green. My attention was however 
particularly drawn towards the 
