common printings, 71

mechanical wood pulp in, 172
moisture in, 6, 77, 134
packing, 78

physical qualities of, 98
rosin, size in, 139
soluble matter in, 141
specific gravity of, 181, 188
stages of manufacture. 4
starch in, 135

statistics, 211 et seq.
strength of, 102
stretch of, 110
tearing qualities, 115
technical difficulties, 6
testing machines, 102
thickness of, 100
trade, 1

transparency of, 10, 124
varieties of, described, 227
volume composition, 178
wear and tear of, 111, 112
wood pulp, 68

Papermaking, principles of, 4