the world has ever seen. The products of these in- 

 dustries will comprise wood pulp, pulp boards, paper, 

 paper bags, paper twine, turpentine, rosin, pine oil, 

 charcoal, tar, ethyl alcohol, cattle feed, varnishes r 

 ether, and not improbably acetic acid, wood alcohol, 

 acetone and producer gas. 



The wood of long-leaf pine is heavy, exceedingly 

 hard, very strong, tough, coarse-grained, compact, 

 durable and very resinous. Its density varies with 

 the height from the ground, the age of the tree and 

 Its content of pitch or oleoresin. Sargent gives the 

 average specific gravity as about 0.7, which would 

 seem to be too high: determinations in the Forest 

 Products Laboratory ranged from 0.426 to 0.583. 

 Determinations in our own laboratory gave 0.626 

 as the specific gravity of round wood averaging 7 

 inches in diameter. The weight per cubic foot for 

 logging waste we found to be 39.1 Ibs. bone-dry. 

 The weight per cord depends greatly upon the shape 

 and size of the pieces. On the dry basis we have 

 found the sawdust to weigh about 1,400 Ibs., mill 

 waste with little or no bark 2,340 Ibs., with much 

 bark 1,708 Ibs.; logging waste in the form of fairly 

 smooth, round logs weighs about 3, 260 Ibs., and if rough 

 and irregular will average 1,860 Ibs., while mature 

 long-leaf pine consisting largely of heartwood will 

 run about 4,300 Ibs. to the cord, bone-dry. 



We find the ultimate composition of long-leaf pine 

 to be: 



Carbon Hydrogen Oxygen Nitrogen Sulfur Ash Total 



53.96 7.13 38.65 0.03 0.04 0.16 100 per cent 



Our determination of fuel value of average sawmill 

 dust gave 9,240 B. t. u., dry basis. Moisture in green 

 wood averages 34.15 per cent, fresh green stumps 

 average 28.69 per cent, lightwood 13.35 P er cent. 

 Stumps about 6 years old carry around 20 per cent 

 of water and kiln-dried lumber contains an average 

 of about 10 per cent. The proportion of bark varies 

 to some extent with the age of the tree and is relatively 

 high. Small, round, Mississippi wood had about 9 

 per cent, Florida pulp wood over 1 1 per cent, and Florida 

 trees over 18 inches diameter bore 8.6 per cent of 

 bark by weight. Determinations in our laboratory 

 of the fiber length of long-leaf pine gave a maximum 

 of 7.40 mm., minimum 3.00 mm. with an average of 

 4.60 mm. as compared with 3 to 3. 5 mm. for spruce. 



In determining the amount of field waste under 

 careful operation, members of our organization selected 



(3) 



