326 _ A new process for nitrous Ether. 
into another those in which the franklinite is the PEAVY 
part—the first can be employed as ores of zinc, to afford 
that metal by qpulalions with charcoal, or to afford brass 
by fusion with copper charcoal. If we stop at the ex- 
traction of the zinc, Ai Sa can be Peat ie 
melted in the high furnace to obtain the “ fone,” or at 
it can be mixed for the same purpose, with the ores Ae 
are rich in franklinite 
s 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 prensa eminently adapted for the 
production of the natural steel, like that which comes from 
the ores of spathic iron. There v mand 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 fourneaur 
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 particular arrangements, to extract it with fa- 
cility ; but the pale of this substance would pay for the 
trouble it 
"Finally, mite the fo Sars: Fetklinite: 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 sma 
way, and it can be seen whether it will not be better hikes 
ed than the common “ fonte,” for various uses. 
Arr. _ XVII. A new process for Nitrous Ether, by Profes- 
wipe hess D. 
_ sor Ropertr Hare, M. 
making of nitrous ether is a critical process. The 
action “of the materials will often spontaneously increase 0 
as to produce explosion. It may be conducted with ease 
an ‘gid by means of a three necked bottle represente 
by Fi ig. 7 , (in the plate which exhibits the eudiometers-) 
Ss eameteiiedeteesner tea ea 
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