408 Tungsten and Tellurium. 
dissolved in ammonia, the black powder again appeared, and ~ 
“so on, as under 3, Part. II. 
3. The solution 1, diluted largely with water, deposited an 
abundant white precipitate, which was very heavy and rapidly 
subsided. 
4. Alcohol and ammonia, respectively, produced the same 
effect, only more decidedly. 
5. This precipitate, evidently an oxyd of a metal, being col- 
lected on a filter and dried, exhibited the following properties. 
6. Heated by the blow-pipe on charcoal, it was instantly vo- 
latilized in part, and in part decomposed, with an almost ex- 
plosive effervescence; numerous ignited globules of metal 
appeared on the charcoal, and burned with an abundant flame 
of a delicate blue color, edged ionally with green. 
7. In many trials, these results always occurred, and some- 
times a Aiea odor was perceived, at first thought to be 
owing to , but it was anegmpareuly feebler, and some- 
what aa that of radishes 
inc, iron, and tin, siunged into separate portions of the 
nitro-muriatic solution, precipitated abundantly a black floc- 
culent substance. 
: charcoal before the blow-pipe, this substance was 
very combustible, with a blue flame, and was completely dis- 
sipated in the form of white oxyd, with the above smell. - 
10. Some of it was obtained on the charcoal in metallic 
globules; it was a brittle metal, white witha tinge of red, and 
foliated, but not so distinctly as bismuth and antimony. 
11. The filters on which the white oxyd had been deposited, 
burned almost with explosion, nearly as rapidly as if they had 
been soaked with nitrate of potash, or of ammonia, and the 
characteristic blue flame appeared while the burning lasted. 
aT 
ihis ,} 
j ion, where, under the idea 
that possibly chrome might e cnet in the ores, they had Beets intensely heated in 
a forge along with pearl ashes. The mass, when lixiviated, gave only a green- 
ish solution, becoming colorless by nitric acid, and singe greenish by an alkali ; 
this was supposed to be owing to iron and manganese. No metal was obtained, 
except a few minute globules of attractable iron, at the laboratory was filled 
with white fumes, having the peculiar odor alluded 
