On the Geological Associations of Tellurium.. 363 
V.—Arnrican Reatm, inhabited by Nubians, Abyssinians, Foolahs, 
Negroes, Hottentots, Bosjesmans, and divided into 
Saharian fauna, 
Nubian fauna. 
Abyssinian fauna, (extending to Arabia), 
Senegambian fauna. 
Guinean fauna. 
African Table-land fauna. 
Cape of Good Hope fauna. 
Madagascar fauna. 
ViI.—East Inpian (or Malayan) Rea, inhabited by Telingans, 
Malays, Negrillos, and divided into 
Dunkhan fauna. 
Indo-Chinese fauna. 
Sunda Islandic fauna, (including Borneo and the Philip- 
pines). 
VII.—Auvsrratian Ream, inhabited by Papuans, Australians, 
and divided into 
Papuan fauna. 
New Holland fauna. 
VIII.—Potynestan REA, inhabited by Ronse Sea Islanders, and 
containing 
Polynesian fauna. 
On the Geological Associations of Tellurium. By WILLIAM 
- Jory Henwoop, F.R.S., F.G.S., Member of the Geolo- 
gical Society of France; Hon. M.Y.P.S., &c.; Mineral 
Surveyor to the Hon. Kast India Company.* (Communi- 
cated by the Author.) 
It is remarkable that tellurium, in its native state, although dis- 
covered by Miiller so long ago as 1782, has been found only in 
one locality—at Facebay in Transylvania—until now. Its alloys 
indeed have hitherto been detected in Norway, in Hungary, and in 
Siberia, only. 
In Transylvania the native tellurium occurs in veins traversing 
a sandstone formation; but its alloys are found in lines which 
intersect a porphyritic rock ; and both the metal and its compounds 
are accompanied by gold, sulphuret of antimony, and blende, In 
Norway bismuth is associated with them, and in Siberia they are 
mixed with lead. 
Seven years have probably elapsed since I became acquainted 
with the occurrence of native tellurium in the mines of Coelho and 
Paciencia, near Morro de Sao Vicente, about thirty miles west of 
* From the Transactions of the Royal Geological Society of Cornwall. 
