18, 5 Valencia: Commercial Philippine Timbers 505 
Reference number. 
ray 27 38 
Modulus of rupture in 1,000 
Pounds per square inch 
Dry weight per cubic foot 
me 
& | ee 
~ 
Fic. 18. Apitong No. 4. 
Reference number. 
‘6 30 as 46 3 
per 
o 
se 
> 
rupture in 
pounds 
square inch, 
&S & 
s 
Modulus of 
1,000 
= 
fe 
x 
Pounds = sea foot, 
| 
| 
Fig. 19. Tangile No. 1; structural sizes, 
The tests undertaken in the Bureau of Science were not suf- 
ficiently numerous or typical of the trees growing in different 
localities to establish very representative data concerning the 
mechanica] properties of each particular species. However, the 
data presented give a general idea of the mechanical properties 
of the timbers tested. 
