ZACATON AS A PAPER-MAKING MATERIAL.
25
PHYSICAL TESTS OF ZACATON PAPERS. grade these papers according to any recognized from the zacaton plant is not recognized as the equivalent of any commercial paper stock. From the fact that the chemical examination placed the fiber very close to soda poplar fiber it might be regarded as the equivalent of soda poplar in grading the samples according to any scheme of classification. However, since the endurance of these papers, as well as their behavior under manufacturing conditions, yet remains to be proved, it would hardly be justifiable at present to regard zacaton fiber as the equivaIt is impossible to
classification, since the fiber
FlG.
lent of
13— Beating machine
any commercial
It
fiber.
consider each physical test
by
supplied with washer.
would seem
better,
on the whole,
to
itself in characterizing these special
papers.
and specifications followed in this work main is used as the basis is that established by Veitch, which in the in the purchase of paper by the Government. to Sample sheets from the semicommercial tests were submitted for Chemistry of Bureau the Leather and Paper Laboratory of the testing room physical examination. This laborato ry makes use of a
The system
of classification
1
i
Veitch, F. P.
Paper
specifications.
In U.
S.
Dept. Agr. Rpt.
89, p. 13-51, 4 fig.
1909.
