THE SUITABILITY OF AMEBIC AN WOODS FOB PAPEB PULP 33 
Bleach required: 20 to 30 per cent in one stage, or 15 to 25 per cent in two 
stages. 
Uses to which pulp is suited: High-grade kraft wrapping papers and fiber 
board. 
From 2 to 36 gallons (in the case of selected material) of turpentine and pine 
oil per cord of wood may be recovered from the digester relief. 
By Mechanical Process 
Not suitable for mechanical pulp on account of the high pitch content usually 
encountered. 
Monterey Pine (Pinus radiata, formerly, P. insignis) 
Other names in use. — Monterey pine is the name universally used for this 
species. 
Range. — Occurs only in a few small areas near the coast of southern California. 
Oven-dry weight per cubic foot, green volume. — 29 pounds. 
Fiber length. — 
By Sulphite Process 
Reduces fairly readily. 
Unbleached pulp: Strong and of fair color; somewhat coarser than spruce 
sulphite pulp; fairly easily bleached. 
Yields: 45 to 50 per cent. 
Bleach required: 20 to 30 per cent. 
Uses to which pulp is suited: Wrapping and printing papers. 
By Sulphate Process 
Reduces readily. 
Unbleached pulp: Very strong, difficult to bleach. 
Yields: 45 to 55 per cent of strong pulp. 
Uses to which pulp is suited : High-grade kraft wrapping papers and fiber board. 
By Mechanical Process 
Behavior probably similar to that of jack pine. 
Norway Pine (Pinus resinosa) 
Other names in use. — Red pine, hard pine, and northern pine. 
Range. — From Nova Scotia to northern Ontario to southern Manitoba; south- 
ward through the Northern States to Massachusetts, southeastern Pennsylvania, 
northeastern Ohio, central Michigan, and northern Wisconsin; southern Wis- 
consin and northeastern Minnesota. 
Oven-dry weight per cubic joot, green volume. — 27 pounds. 
Fiber length. — 3.7 mm. 
By Sulphite Process 
Reduces fairly readily. 
Unbleached pulp: Of good color, fairly fine-fibered and fairly strong; probably 
somewhat pitchy; fairly easily bleached. 
Yields: 45 to 50 per cent. 
Bleach required: 15 to 25 per cent. 
Uses to which pulp is suited: Few. Limited chiefly by content of pitch. 
By Sulphate Process 
Reduces readily. 
Unbleached pulp: Very strong. 
Yields: 45 to 55 per cent of strong pulps, 40 to 45 per cent of pulp for bleaching. 
Bleach required: 30 to 40 per cent. 
Uses to which pulp is suited: High-grade kraft wrapping papers and fiber 
board. 
By Mechanical Process 
Behavior probably similar to that of jack pine. 
31897°— 27 3 
