ot 
fine varieties, although they have hitherto been 
unnoticed. 
On the coast of Sumatra, is found the rare 
Strombus Fusus, and many other valuable 
shells. A Serpula Gigantea, (a tubular shell 
about an inch in diameter), was dug out of the 
bank of a river after an earthquake. For the 
possession of this rare species, I am obliged to 
Mr. Griffiths, a gentleman high in the service 
of the Hon. East India Company. Sumatra 
is also rich in gold, which is found in the allu- 
vium. The neighbouring Isle of Banca is cele- 
brated for its tin, which is likewise found in 
the alluvium. In some parts of the island, the 
strata of this metal are only a few inches be- 
low the surface, and of considerable thickness. 
PuLO-PENANG, and the other islands in 
these seas, produce many fine shells; and from 
