With iodine it appears to form a fluoride. No
compound with oxygen has yet been obtained.--_Industries._
* * * * *
AN APPARATUS FOR PREPARING SULPHUROUS, CARBONIC, AND PHOSPHORIC
ANHYDRIDES.
BY H.N. WARREN, RESEARCH ANALYST.
Having had occasion to prepare a quantity of sulphurous anhydride, for
the purpose of reducing chromates previous to their analysis, I made use
of the following apparatus, as represented in the accompanying figure.
It consists of a glass vessel, A, provided with three tubulars,
otherwise resembling a large Wolff bottle, the large tube, B, being
provided with a stopper for the purpose of introducing pieces of sulphur
from time to time into the small dish, C, intended for its reception,
and fed with air by means of the delivery tube, D, thus allowing the
stream of gas caused by the consumption of the sulphur to escape by
means of the exit tube, E, to the vessel desired to receive it.
[Illustration]
In using the apparatus the sulphur is first kindled by introducing a red
hot wire through the tube, B, and replacing the stopper that has been
momentarily removed for the introduction of the same. A slight blast is
now maintained from the bellows that are in connection with the pipe, D,
until the whole of the sulphur is thoroughly kindled, when a somewhat
more powerful blast may be applied.
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