270 Scientific Intelligence. 
CaHsN + 2HO-4-2H2$20s=CsHs82010-4+ 47, 1 820s, 
CaHsN48H2S20s =C2HiSs012 +517, 1 $208-+2002. 
By precisely analogous processes the authors obtained Gantphe ene acid 
C4HsH2S84012, and sulphopropionic acid CeHsH282010. disulphopro- 
piolic acid Ce He H2S2012, and sulphobutyric acid CeHeBazSs0io, di- 
sulphobenzolic acid C12Ha1H2S84012, and sulphobenzoic acid. The new 
acid B. and H. cbtained a new r acid which rape term ikea acid, 
O10+-2Ba0. In conclusion the authors establish the identity of disul- 
phometholic acid with Liebig’s methionic acid obtained by the action of 
anhydrous sulphuric acid upon ether at a low temperature. Strecker 
faery Saeaes the same fact in an independent investigation of methionic acid 
salts— Ann. der Chemie und Pharm., c, 129 and 199, ee 1856. 
a 
Ii, MINERALOGY AND GEOLOGY. 
1. Note on the occurrence of Telluret of Silver in California ; by Wu- 
pom 
tam P. Brake, (Proceedings Acad. Nat. Sci. California)—A 
i town, California, resembling a fragment of tar- 
e massive Suites of the specimen are sectile and do not show any traces 
of crystallization; they may be cut with a ee on ae and give a 
brilliant metallic surface. Hardness about 2 of Mohs’ 
In the open tube, before the blowpipe het the shitiegs ‘fuses quietly, 
coloring the glass a bright yellow under the assay; a white or gray su li 
mate is deposited at a short distance from, or immediately over it, which, 
on being heated, fuses into transparent drops resembling oil. 
On charcoal, it Bese readily to a aman et globule, which, on 
cooling, becomes covered with little points or dendrites. This globule 
flattens under the Sates mer, but breaks on nih eden With the addition 
of a little carbonate of soda a globule of a is readily obtained. A 
—— redness in a closed tube or matrass with carbonate of 
charcoal dust, gives on the addition of afew drops of boiling 
pe srg beautiful violet- red or purple solution described by Berzelius a 
characteristic urium. This solution loses its color after standing 
for some time, and a dark colored powder is deposited. The min neral dis- 
solved in hot nitric acid with the separation of tellurous acid in crystals. 
It is probably the species Hessite, but the decision upon this point 1s 
reserved until further examinations are made. Its color is than 
the hessite of Savodinsky, Siberia, and it is not quite so hard. 
ee gee 
