sold for seventy-five. As for wear--well, they all of them wear till
after we get tired of wearing them. Paper "vulcanized" by being run
through a 30 per cent. solution of zinc chloride and subjected to
hydraulic pressure comes out hard and horny and may be used for trunks
and suit cases. Viscose tubes for sausage containers are more sanitary
and appetizing than the customary casings. Viscose replaces ramie or
cotton in the Welsbach gas mantles. Viscose film, transparent and a
thousandth of an inch thick (cellophane), serves for candy wrappers.
Cellulose acetate cylinders spun out of larger orifices than silk are
trying--not very successfully as yet--to compete with hog's bristles and
horsehair. Stir powdered metals into the cellulose solution and you have
the Bayko yarn. Bayko (from the manufacturers, Farbenfabriken vorm.
Friedr. Bayer and Company) is one of those telescoped names like Socony,
Nylic, Fominco, Alco, Ropeco, Ripans, Penn-Yan, Anzac, Dagor, Dora and
Cadets, which will be the despair of future philologers.

[Illustration: A PAPER MILL IN ACTION

This photograph was taken in the barking room of the big pulp mill of
the Great Northern Paper Company at Millinocket, Maine]

[Illustration: CELLULOSE FROM WOOD PULP

This is now made into a large variety of useful articles of which a few
examples are here pictured]

Soluble cellulose may enable us in time to dispense with the weaver as
well as the silkworm. It may by one operation give us fabrics instead of
threads. A machine has been invented for manufacturing net and lace, the
liquid material being poured on one side of a roller and the fabric
being reeled off on the other side. The process seems capable of
indefinite extension and application to various sorts of woven, knit and
reticulated goods. The raw material is cotton waste and the finished
fabric is a good substitute for silk. As in the process of making
artificial silk the cellulose is dissolved in a cupro-ammoniacal
solution, but instead of being forced out through minute openings to
form threads, as in that process, the paste is allowed to flow upon a
revolving cylinder which is engraved with the pattern of the desired
textile. A scraper removes the excess and the turning of the cylinder
brings the paste in the engraved lines down into a bath which solidifies
it.

Tulle or net is now what is chiefly being turned out, but the engraved
design may be as elaborate and artistic as desired, and vari