52 BULLETIN 343, U. S. DEPARTMENT OF AGRICULTURE. 
which accompany this bulletin, and also that the different woods 
were in various stages of seasoning when ground into pulp, a fact 
which might materially influence their relative color rating: 
1. Alpine fir. 14. Jack pine. 
2. White spruce. 15. White fir (old and young trees mixed). 
3. Engelmann spruce. 16. Noble fir. 
4, Black gum. 17. Loblolly pine (spring cut). 
5. Lowland fir. 18. Aspen. 
6. Montana lodgepole pine. 19. White birch. 
7. Loblolly pine (fall cut). 20. Sitka spruce. 
8. White pine. 21. Eastern hemlock. 
9. Balsam fir. 22. Red fir. 
10. White fir (young wood). 23. Tamarack. 
11. Western yellow pine. 24. Western hemlock. 
12. California lodgepole pine. 25. Larch. 
13. Amabilis fir. 
Fic. 40.—Sitka spruce (Picea sitchensis). 
White, Alpine, amabilis, and balsam fir are light in color, comparing 
very favorably in this respect with white spruce. Red fir and noble | 
