152, Chronicles of Science. | Jan. 
was subjected to analysis, and its meteoric character supposed to be 
determined. The constituents of the Aérolite were— 
Metallieiiron ee uno laioe 
Pe Nickell mca). sermOro 
iN ftw ee oetoy soniye A OROOS: - 
BhosphoTusisweeen enn ue CAO LO 
Cobalt and chrome were also detected.* 
We have already given the value of the Metallurgical products of 
British ores ; there is little of novelty in the furnace operations to which 
they are subjected. Although numerous patents have been completed, 
and notices of many more given, for improvements in the processes of 
smelting the several metallic ores, there is scarcely anything of suff- 
cient importance to require special notice. One Patent for ‘ separating 
Silver and other Metals from Lead,” founded on a principle discovered 
by M. Clement Roswag, Engineer, of Paris, promises to be successful. 
In carrying out this invention, the first operation consists in fusing 
the lead containing silver and incorporating zinc therewith. For 
this purpose a suitable furnace is provided with a melting-pot or 
vessel, in which the lead and zinc are melted, the zine being placed in 
suitable tubes or holders, and deposited, after the lead is melted, at the 
bottom of the vessel, so that as it melts it rises up through the molten 
lead by reason of its less specific gravity, and by means of agitators it 
is uniformly distributed in its passage through the fluid lead. When 
the whole of the zinc is melted and has risen to the surface of the 
molten lead, the zine holders and the agitators are removed from the 
vessel, and the alloy of zinc and silver is skimmed off the surface, to 
be operated upon in the ordinary manner by oxidation. The molten lead, 
which now contains a small percentage of zinc, is next run off into the 
hollow of a reverberatory furnace, such as is generally used for an- 
nealing and refining lead, and the zincy lead is purified by keeping it 
in a state of fusion at a dull red heat, and subjecting it to the action 
of the vapours or gases arising from the burning or decomposition of 
pieces of green wood enclosed in suitable tubes or holders below the 
surface of the molten lead; the dross of the zine (called seconds) is 
skimmed off during the process, and is added to the alloy of zine and 
silver previously obtained. The lead thus refined is run into ingots 
for sale or use. 
Under the name of Wasium, a new Metal has been recently an- 
nounced by M, Bahr, as existing in the Orthite of Norway. M. Nickles 
denies the reality of the discovery—according to him, the supposed 
new simple body is but impure Yttrium. 
We expected to have examined Dr, Percy’s second volume of Me- 
tallurgy, which will be devoted to Iron and Steel ; although long since 
announced, it is not yet ready for publication. We may, however, 
safely predict that this work will be a valuable contribution to the 
Metallurgy of iron. 
The late Exhibition furnished many striking illustrations of the 
importance of mechanical improvements to the worker in Metals. 
* «The American Journal of Science and Arts. Conducted by Professor 
B, Silliman and others. No. 107, September, 1863. 
