For this reason the silk thread
interspersion is in reality a very effective medium in preventing
counterfeiting, not only on account of its peculiar appearance but also
because of the elaborate methods necessary in its production.
In those mills making the finest grades of paper, much of the process of
thrashing, beating, dusting, and cleaning necessary in the ordinary mill
is omitted. The cleanliness and brightness which are reached only at the
"washer" and "beater" engines in the process of manufacturing the lower
grades of paper from cheaper rags, prevail at every step in these higher
grade mills.
One of the first requisites in making good paper, especially the better
grades, is an abundance of pure water, and spring-water, where
available, is preferred.
The effort has been made in the description given to cover the process
of making paper from the crudest rags. In enumerating the several kinds
of paper in another chapter, brief reference will be made to the varying
methods required in their manufacture. In this chapter, no attempt has
been made to cover more than the principal divisions or varieties of
paper--writing, print, and wrapping papers.
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