Miscellaneous Intelligence. 291 
Leyden: the first from observations of March 1 at Bilk, April 12 at 
Berlin, May 26 at Leyden; the second from cman eee of March 1, 
at London, April 11 at Berlin, May 31 at Leyde 
Epoch, March 0, m. t. Berlin, 
Bellona, phitrite. 
Mean anomaly, . 30? 10°RsIS 127° 23' 56/9 
Longitude ro perihelion, 117 23 5-6 ‘2 |) M.eqx. 
asc. node, 144 57 563 356 15 54 6 I iso20 
Inclination 6 28 QT 1645 6 4 6°35 
Angle (sin = excen.) . 9 53 450 3 55 43: 
Log. mean daily motion, 2882097 2941143 
** semi-axis major, 0°445273 0:405909 
V. MiscELLaneous INTELLIGENCE. 
ment of nitrate of soda with heat. The ores in a state of fine divis- 
ion are mingled with pulverized nitrate of soda in atomic proportion to 
the sulphur of the ores. The reaction is between two atoms of oxy- 
gen escapes as an effete product, and sulphate of soda with sulphate of 
Copper, oxyd of iron and metallic gold remain in dry mass. A very 
gentle heat suffices to bring on the action. The resulting dry mass soon 
falls to powder under the influence of the air, and is lixivated to separate 
the soluble sulphates. The ee may nt avpamns by the action of 
Scrap iron, or if ve ery abundant may be crystallized from the mother liquor 
as blue vitriol, The gold is left in note inva by this process in a condi- 
tion remarkably adapted to speedy and perfect amalgamation by mer- 
_ Cury, for which purpose any of the rh Sr now in use may be e 
ployed. The application of this process = a large scale will depedal 
upon the ability to procure an ample supply of crude nitrate of soda, 
abundance of which is said to exist in ihe province of Iquique.* Dr. 
- Lieber, who has published a report upon Dr. Hoiland’s process, 
states that by it he obtained quantities of gold from the tailings of the 
best amalgamators, greater than had been previously separated from the 
entire ore. It is well known that the sulphurets of the North pega 
gold-beari ing quartz are all auriferous, but the gold exists in such a 
whether mechanical or chemical, is perhaps hardly settled, that it sap 
not be removed by the ordinary use of mercury. In such cases Dr. 
Holland’s process seems to be peculiarly valuable. Its use for ordinary 
r ores appears to be less promising, owing to the present cost of 
nitrate of soda. 
2. Separation of Nickel and Cobalt by Wohler’s process, (communi- 
cated ee * fete E. Daxin, Albany University.) —Having a solution of 
tmolvg eH cobalt in hydrochloric acid, precipitate by potassa, filter, re- 
anid of | ; lassiu um, add peroxyd of mercury, triturated in 

* See John H, Blake, this Journal, [1], vol. xliv, p. 1. 
