18, 5 Valencia: Commercial Philippine Timbers 487 
ported from the following provinces and islands: Cagayan, Ca- 
layan, Isabela, Ilocos Norte, Pangasinan, Nueva Kcija, Bulacan, 
Zambales, Bataan, Laguna, Tayabas, Polillo, Camarines, Albay, 
Sorsogon, Marinduque, Samar, Leyte, Cebu, Mindoro, Negros, 
Capiz, Biliran, Basilan, Surigao, Cotabato, Davao. Commercial 
material from other regions indicates that probably the species 
occurs in some places where it has not yet been reported. 
Tangile is a tall, straight tree, reaching a diameter of 1.60 
meters or more and a clear length of 22 meters or more. The 
average diameter of merchantable trees in regions where the 
species is fairly abundant ranges between 75 and 100 centimeters. 
Tangile is soft to moderately hard and light to moderately 
heavy; the sapwood is thin (2 to 5 centimeters), pale grayish 
brown, not quite sharply marked off from the heartwood; the 
heartwood is pale pinkish red to dark reddish brown; the grain is 
distinctly crossed, producing a broad, conspicuous ribbon when 
- quarter-sawn; silver grain small, but distinct; texture some- 
what denser than most other lauans and taking a glossier surface 
under a sharp plane; seasons well and is easy to work. Not 
durable in contact with ground or when severely exposed to 
weather, but rarely attacked by insects, except by termites. 
Structure.—Pith rays fine, less conspicuous than in most other 
lauans; pores small to fairly large, less numerous than in other 
lauans, evenly scattered; soft tissue much scantier than in most 
other red lauans; resin rings frequent, distinct, but very ir- 
regular. 
Tangile is used chiefly for all kinds of interior finish and 
furniture. It is one of the woods that have been exported to 
America under the name of Philippine mahogany and, when 
finished properly, closely resembles true mahogany. 
The logs for the, present test were collected, with botanical 
Specimens, in the cutting area of the Cadwallader-Gibson Lumber 
Co., at Limay, Bataan Province. 
APITONG 
Apitong (Dipterocarpus grandiflorus Blanco) is a very widely 
distributed and abundant species. There are several species of 
the same genus, the wood of which is not practically distinguish- 
able and which is sold as apitong. It is therefore not possible 
to give an estimate of the quantity furnished by each species. 
Foxworthy * estimates the total amount of apitong (including 
* Philip. Journ. Sci. § C 13 (1918) 164. 
