GROUND-WOOD PULP. 5 
feet, with an annual increment due to growth of 770,000,000 feet. 
While it is probable that the maximum annual consumption of spruce 
for lumber has been reached, and that that for pulp wood will scarcely 
go much higher, it is nevertheless clear that with the maintenance 
of anything like the present annual consumption the spruce forests 
of this country are threatened with exhaustion. Nor is it likely that 
the American consumer of spruce wood will be able to draw to what- 
ever extent he wishes upon the Canadian supply. In 1900 the 
Province of Ontario prohibited the exportation of unmanufactured 
wood cut on Crown lands within the Province, and later the Provinces 
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MILLIONS OF POUNDS 
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1900 1901 1902 1903 1904 1905 Ppa Cu 1908 1909 1910 BERT 1912 isi3 
Fig. 3.—Imports and exports of wood pulp, 1901-1913, inclusive. 
_ tion. Further restrictive measures regarding the exportation of 
- unmanufactured wood will undoubtedly be taken by Canada if the 
heed arises. 
The rise in the price of spruce over the 10-year period from 1900 to 
1909, inclusive, reflects a steady increase in the consumption of 
mechanical pulp and a decrease in the available supply of the wood. 
In 1900 the average cost of spruce used for pulp-making purposes in 
_ the United States was $4.28 per cord for domestic and $6.50 per cord 
for imported material. In 1909 the average price for domestic spruce 
