Page:Paper and Its Uses.djvu/148

132 is perforated or removed ink can be forced through the stencil, and the prints, although not always showing the broken lines of stencil work, are actually produced by stencil process. On account of the strength of long fibred papers, Japanese tissues are usually employed as the basis of stencil papers.

Tissues.—Fine thin papers, made of strong materials such as rag and hemp fibres, beaten very finely. Other tissues are made of chemical wood and a proportion of straw pulp. Papers are unsized, used for wrapping and