326: _ A new process for mitreus Ether. 
into another those in which the franklinite is the prevailing: 
part—the first can be employed as ores of zinc, to afford 
that metal by distillation, with charcoal, or to afford brass 
by fusion with copper and charcoal. If we stop at the ex- 
traction of the zinc, the residuum can be advantageously 
melted in the high furnace to obtain the “‘ fonte,” or at least 
it can be mixed for the same purpose, with the ores that 
are rich in franklinite. 
As these minerals contain a considerable quantity of man- © 
ganese, and their principal gangue is carbonat of lime and 
garnet, it is probable that they can be treated in the high 
furnace, without addition, and that they will prove very fu- 
sible. A “ fonte” of excellent quality may be obtained 
from them, and in all probability eminently adapted for the 
production of the natural steel, like that which comes from 
‘the ores of spathic iron. ‘There would be deposited in the 
chimnies of the high furnaces, a considerable quantity of 
the oxid of zine, as is the fact in Belgium, where this sub- 
stance is known under the name of cadmie des fourneaux 
ou Keiss; it is the richest and best material which can be 
used for the preparation of zinc and brass. It is possible 
that the abundance of the Keiss may somewhat impede 
the operation of the high furnaces, and necessitate the adop- 
tion of some par ticular. arrangements, to extract it with fa= 
cility; but the value of this substance would pay for the 
trouble it might occasion. 
Finally, with the pure franklinite, which it will be very 
practicable to obtain, either by picking or washing, the trial 
can be made of preparing in the large way, the same alloy 
of iron and manganese, which I have obtained in the small 
way, and it can be seen whether it will not be better adapt~ 
ed than the common “ fonte,” for various uses. 
Arr. XVIE. 4 new process for Nitrous Ether, by Profes- 
sor Ropert Hare, M. D. 
The making of nitrous ether is a critical process. The 
action of the materials will often spontaneously increase se 
as to produce explosion. It may be conducted with ease 
and oe) by means of a three necked bottle represented 
by Fig. 7, (in the plate which exhibits the eudiometers.) 
