20 
BULLETIN 1S*1, U. S. DEPARTMENT OF AGRICULTURE, 
amount of American wood supplied fell off actually by about 185,000 cords as 
well as relatively, a disquieting situation which is brought out sharply in Figure 13. 
The most urgent phase of the book paper problem on the basis of 1922 re- 
quirements is, therefore, to secure from our own forests each year additional 
amounts of about 130,000 cords of aspen for soda pulp and 140,000 cords of 
spruce for sulphite pulp and thus become independent of pulp-wood imports. 
BOOK PAPER CONSUMPTION, WITH SOURCES 
THOUSAND (Expressed in paper tons) 
TONS I I I I 
^ Total consumption 
* From domestic sou 
d From Canada 
° From all other countries 
I 
Total consumption 
I 
1900 '05 *!0 *J5 '20 1925 
Fig. 13.— The amount of domestic wood used in the manufacture of book paper has fallen of! rapidly since 
1914, but this decrease has been made up and more by imports of pulp wood, pulp, and paper from other 
countries. 
WRAPPING PAPER. 
Wrapping paper averages in its composition about 40 per cent of sulphate 
pulp, 25 per cent of sulphite, 17 per cent of mechanical, 9 per cent of manila 
stock, and the remainder of other materials. 
The United States is more nearly self-supporting in materials for wrapping 
than for any other class of paper, with 66 per cent of requirements coming from 
American forests in 1922. (Table 25.) Dependence for the remainder is divided 
about equally between Canada and Europe. Exports are small. 
As in book paper, material for wrapping is imported mostly as pulp, a total 
of about 27 per cent, in approximately equal amounts from Canada and Europe. 
Paper imports are small and from Europe, while Canada supplies all the pulp 
wood, amounting only to 6 per cent, or about 130,000 cord- of spruce and fir. 
As in book paper, the United States has been increasing the volume of its 
imports. In the eight years following 1914 the use of American material declined 
21 per cent, and, moreover, the actual amount declined about 140,000 cords. 
The trend is illustrated graphically in Figure 14. 
Although the total American "boards" consumption for 1922 falls short of 
newsprint consumption by only a relatively small amount, some 80 per cent 
of boards consists of all sorts of waste paper and straw. The 20 per cent rjl 
new pulp which normally goes into board manufacture meant, therefore, in 
1922 about 430,000 tons in manufactured paper. (Table 21.) Sulphite, sulphate, 
and mechanical pulp each contributes about one-third to this new material. 
