intermission.

The charges for the furnace are made up with raw material, i.e.,
native phosphates without any previous chemical treatment, and the
only manufactured material necessary--if such it may be called--is the
carbon to effect the reduction of the ores.

The crude phosphorus obtained in the condensers is tolerably pure, and
is readily refined in the usual way.

Dr. Readman and Mr. Parker have found that it is more advantageous to
use a series of furnaces instead of sending the entire current through
one furnace. These furnaces will each yield about 11/2 cwt. of
phosphorus per day.

Analyses of the slag show that the decomposition of the raw phosphates
is very perfect, for the percentage of phosphorus left in the slag
seldom exceeds 1 per cent.--_Chemical Trade Journal_.

* * * * *

NEW BLEACHING APPARATUS.

The apparatus forming the subject of this invention was designed by
Francis A. Cloudman, Erwin B. Newcomb, and Frank H. Cloudman, of
Cumberland Mills, Me., and comprises a series of tanks or chests, two
or more in number, through which the material to be bleached is caused
to pass, being transferred from one to the next of the series in
order, while the bleaching agent is caused to pass through the series
of chests in the reverse order, and thus acts first and at full
strength upon the materials which have previously passed through all
but the last one of the series of chests and have already been
subjected to the bleaching agent of less strength.

For convenience, the chest in which the material is first introduced
will be called the "first of the series" and the rest numbered in the
order in which the material is passed from one to the other, and it
will be understood that any desired number may be used, two, however,
being sufficient to carry on the process.

The invention is shown embodied in an apparatus properly constructed
for treating pulp used for the manufacture of paper, and for
convenience the material to be bleached will be hereinafter referred
to as the pulp, although it is obvious that similar apparatus might be
used for bleaching other materials, although the apparatus might have
to be modified to adapt it for conveying other materials of different
nature than pulp from one bleaching chest to the other and for
separating out the bleaching liquid and conveying it from one chest to
the other in the reverse order to that in which the material pass