384 
FOXWORTHY. 
buxifolia Pers., a small tree with white,, or light-colored, sapwood and 
clear, black heart. 
The pure-black portion of any one of these three woods is true ebony. 
It is formed from the sapwood by the deposit in all the wood elements 
of a very dense, black substance, which causes the wood to become very 
heavy, very hard, and very brittle. It will be seen from this that there 
are several species of trees in the Islands that furnish true ebony. They 
are, none of them, of large dimensions, but they are of frequent occur- 
rence and rather wide distribution. 
Ahern, 1. c., pp. 50-51. 
GUIJO. 
Shorea guiso (Blanco) Blume. Fam. Dl PTEROCARPACE/E. 
( Mocanera guiso Blanco. Dipterocarpus guiso Blanco.) 
Betic (Laguna) ; carucat, catapang (Nueva Visc&ya) ; guijo, guijo- 
bitic (T.) ; niquet (II.) ; saray (II., 1ST. Luz.) ; yarnban, yate, zilan (II.). 
Very closely related to the “sal” wood of India. 
Philippines. 
Moderately heavy and hard. Sp. gr. 0.688. 
Ashy-red. No distinct seasonal rings. Fairly straight-grained, warp- 
ing badly. Sap and heartwood distinct ; sapwood very light colored. An 
appearance as of seasonal rings often caused by lines of resin canals. 
Wood with faint, resinous odor. 
Uses. — General construction; shipbuilding; carriage wheels, frames, 
and shafts: flooring and girders of houses; inferior furniture; beams; 
beams of ships; booms of ships; bridges; casks and barrels; decking; 
docks; hubs; keels of ships; masts; naval construction; outrigger sup- 
ports ; oars and paddles ; partitions ; plows ; posts ; rafters ; side planking 
of ships; telegraph poles; wheel rims; wheel spokes. 
Structure. — Pith-rays small. Vessels medium size to small and scat- 
tered. Wood parenchyma scanty and scattered. Eesin canals in incom- 
plete concentric lines, superficially resembling seasonal rings and whitish 
in color, because of the contained resin. 
Guijo and the finer grades of apitong are so much alike that it is 
practically impossible to tell them apart. Ordinarily, however, the api- 
tong is much coarser grained. For many purposes, it is probable that, 
contrary to common opinion, apitong is the better wood. 
Bull. For. Bur. Manila (1906), 4, 52; 2d ed. (1907), 4, 55. Ahern, 
1. c., 52-53. 
IPIL. 
Intsia bijuga (Colebr.) 0. Kuntze. Fam. LEGU M I NOS/E. 
( Afselia bijuga A. Gray. Eperua decandra Blanco.) 
Intsia Acuminata Merr. 
Ipil (T., V.) ; obien (Pang.). 
Intsia bijuga is distributed throughout the Eastern Tropics. It is one 
of the most important Bornean woods. I. acuminata is known only from 
the Philippines. 
