Mineralogy and Geology. 275 
found, showed me the original mass, first found in 1833, of which men- 
tion is made by Lt. Baddeley of the Royal Engineers.* Its weight is 
about 1052 grains troy (exactly 68-203 grammes). Other masses of 
equal weight have also. been found in the bed of the same stream. 
The weight and density of these were taken which were. respectively, 
Grains. Grammes. ensit 
Weight, 12" Ss 7022 16-00 
as : 742-16 . 48-095 yi B54 
s » 1058: 68-598 12-86 
Numerous smaller masses sh also béen found. The density indi- 
cates the presence of silver in the gold—whi hiclt the faint color also con- 
firms. The analysis of a fiinaien by Mr. Hunt gave 13°67 pr. ct. silver. 
The less densit ‘the larger massewas owi ng, deubtless, to foreign 
matter mechanically entangled as well as to interstices filled with air. 
The lumps are worn smooth as is usual in alluvial gold, but fragments 
of quartzose gangue aah still Pd detected in some of them. Mr. 
De at they. were firmly imbedded in what appeared 
to him to be aiegte but which probably.a conerete of detritus, cement- 
¢ by oxyd of iron. ~Chromic iron, ti rous iron, serpentiney spinel, 
gold in Canada ¢ertainly Moe Rvonbip grounds for the hope oe 
this may eo a rich auriferous regi 
o excavations have been made on any scale of ninguinuibe 
sufficient tie dorarrith an opinion of the actual wealth of the deposit. A 
few tons of gravel have, however, been washed in a rude way with the 
Berks rockers whieh bere ; Same about $4 of gold to an = 
rave : 
: 11. Dikinbiine’ New Mineral, Adeiaoki de Ph. et en Ch., Mareh, 
1848 ; Phil. Mag., xxxii, 544.)--This name has been given tow mineral 
of a greenish- gray color, crystallized in hexahedral prisms, and found 
inated in a red felspar porphyry at Monte Viesena, near Forno, 
in the-valley of Flems*(Vallé de Passa 
M. Marignac has submitted this ented to analysis, a has deter- 
mined its mineralogical characters. Its density is 2814; its hardness 
csc that of carbonate of lime and fluor-spar. Its Cone 
taking the mean of three ee was found to be— 
Silic: ge 5 : : : ; 44-66 °* ° ®. 
> Alivio a ee oe lg 
Magia. of i ae ‘ ‘ : a ras tl 
> Palais: itl Vane wit cog 990° o 
3 Water ras + ss ’ “? : . i . . dt 7. 
_ Water and carbonic acid, Site ph ‘ ‘ 449° 
12. Produce ¥ Gold in the ied. and Siberia in the year 1846, 
(Erman’s Russ: Archiv. sty, Bd. vi, p: 318; Quart. Jour. Geol. 
No. 13, Feb., 1848.)—Acoording to a notice in the  Kommertscheskaja 
salle ne 
“a " oS ee Journal, yeti, Yok. xxviii, vipieate 
