﻿86 



RICHMOND. 



show a yield of 14,060,778 cubic feet, cutting to a diameter limit of 40 

 centimeters (16 inches) ; of this amount 6,453,368 cubic feet is white 

 lauan. 



THE SHRIXKIXG OF THE VARIOUS WOODS OX BARKIXG. 



Experiments to determine the shrinkage of the various woods in 

 barking gave the following results : 



Table Xo. 2. — Green wood containing 30 to 40 per cod of moisture — blocks one-foot 

 in length varying 15 to 20 centimeters in diameter. 



Kind of wood. 



Weight. 



Loss. 



Before 

 barking. 



After 

 barking. 



Lauan 



Kilos. 

 2.695 

 5.430 

 7.587 

 8.061 

 8.969 



Kilos. 

 2.443 

 4.800 

 6.740 

 6.670 

 8. 012 



Per cent. 

 9.3 

 11.6 

 11.00 

 17.25 

 10.67 



Cupang. . ._ . _. _. .. . 



Mavapis _ _ _ . 



Dita . . _ _ _ 



Santol - - . - - - — - 









One cord of green spruce, containing 3? per cent of moisture and 

 cut in 4-foot lengths, weighed 2,001 kilos (4,440 pounds) ; after barking 

 it was 1,622 kilos (3,570 pounds) or 19.5 per cent shrinkage. 3 



Table Xo. 3. — Dimensions of the ultimate fibers of some Philippine woods. 

 [Table by Dr. Foxworthy.] 









Diameter. 



Name. 





Total. Lumen. 





Maxi- Aver- 

 nium. age. 



Mini- 

 mum. 



Maxi- 

 mum. 



Aver- Mini- Maxi- 

 age. mum. mum. 



Aver- 

 age. 



Mini- 

 mum. 



Lauan (Shorea contorta) 

 Mavapis (Anisoptera vida- 



liana) 



Cupang (Parkia roxburgii) 



Dita (Alstonia sehblaris). 

 Spruce 



mm. mm. 



2. 28 1. 94 



2. 62 1. 92 

 1.80 1.15 

 1.85 1.27 

 4. 54 3. 15 



77i m. 

 1.13 



1.16 

 .86 

 .80 



1.67 



mm. 

 0.026 



.030 

 .038 



.041 

 .043 



mm. 

 0.022 



.023 

 .029 

 .0355 

 .037 



mm. 

 0.017 



.019 

 .021 

 .025 

 .034 



mm. 

 0.017 



.0092 

 .026 

 .025 

 .029 



mm. 

 0.014 



.0058 

 .020 

 .016 

 .0195 



777 m. 



0.009 



.0031 

 .014 

 .010 

 .003 



5 Griffin and Little: Chem. Paper Making (1894), 141. 



8 Sulphite pulp manufactured by Willamette Pulp and Paper Company, Oregon 

 City. Oregon. 



