Page:Paper and Its Uses.djvu/168



Sizes, and subdivisions of papers and cards; number of sheets in quires and reams; easy questions on the various grades of paper.

Hand- and machine-made; qualities and weights, equivalent weights; sizes and subdivisions of printings, writings, and account book papers; sizes and subdivisions of cards.

Various sizes, weights, and subdivisions; differences between machine- and hand-made; coated and super-calendered; effect of heat and damp upon; avoidance of waste from dirt and careless handling.

.—The manufacture of paper. The paper-making machine; fibre-yielding material; warehouse tests for the various celluloses; soft-, half-, tub-, and engine-sizing; china clay, its uses and how to determine proportion.

Various classes of paper (hand-made, mould-made, and machine-made). Printings, coated papers, writings, banks and loans, plate, drawings, account books, cover papers, blottings, vegetable parchments, imitation parchments, manillas, "safety" cheque papers, wrapping papers, gummed papers.

Judging Papers.—How to judge the quality of various classes of papers and their suitability for the purposes to which they