has not the proper facilities for developing and printing the latter
can have these operations performed by a professional. Animate
projections are beginning to be introduced into parlors, and some day
will entirely replace the magic lantern therein. The excitement caused
by the catastrophe at the Charity Bazar is now calmed, and it has been
ascertained that the accident was not due to the lamp of the
projector, but to a carelessly handled can of ether. So the extension
of this sort of spectacle, momentarily arrested, is taking a new
impetus, which will be further aided by the apparatus under
consideration, for the description of which and the illustrations we
are indebted to La Nature.

* * * * *




THE RECLAIMING OF OLD RUBBER.

By HAWTHORNE HILL.


The complaint of high prices of India rubber is as old as the rubber
industry, one result of which has been an unceasing effort to discover
a practical substitute. Never was the secret of the transmutation of
metals sought more persistently by ancient philosophers than the
secret of an artificial rubber has been by modern chemists, but, thus
far, the one search has been hardly more successful than the other.
One discovery has been made, however, by which our rubber supplies
have been so far conserved that, for the want of it, we might be