394 MINOR PRODUCTS OF PHILIPPINE FORESTS 



The extract dyes cotton in neutral or slightly acid solution to a clear, 

 soft brown. Cotton mordanted with tin is colored to a brown shade 

 having an olive tint. The colors are quite fast to light and to washing. 

 Silk is dyed a beautiful, soft, brown shade. The coloring matter reacts 

 like a tannin, giving a black precipitate with ferric chloride and an abund- 

 ant flocculent precipitate with gelatin solution. Owing to the limited 

 supply of this wood and its value as building material, its virtues as a 

 dye wood were not further investigated. 



Spanish and Filipino lumbermen and woodworkers report that 



if streaky ebony or carnagon is buried for some weeks in a 



•mixture of mud and ipil sawdust, the streaky parts of the 



wood become dead black. The sap of fresh ipil makes indelible 



brown stains on white paper or cloth. 



Intsia bijuga is a tree reaching a height of from 30 to 45 

 meters and a diameter of 150 to 180 centimeters. The bole 

 is usually without buttresses and sometimes straight and regular, 

 although more often crooked and deformed. A clear length of 

 15 to 18 meters is exceptional. The bark is 5 to 8 millimeters 

 thick and gray with an orange tinge. Where the bark is shed, 

 shallow saucer-like depressions are left. These usually show a 

 tan-gray color until exposed for some time. The inner bark 

 is light brown and mottled with brown specks. The leaves are 

 alternate and simply compound with usually two pairs of leaflets, 

 which are 8 to 12 centimeters long and from 5 to 8.5 centimeters 

 wide. The flowers are white and reddish, fragrant, and borne 

 in conspicuous clusters. The pods are 15 or more centimeters 

 in length. 



This species is found scattered along the coast and occasionally 

 on low hills, and is common and widely distributed from Luzon 

 to Mindanao. 



Genus PITH ECOLOBI UM 

 PITHECOLOBIUM SUBACUTUM Benth. TiAGKOT. 



Local names: Agho (Negros Occidental); asam-dsam (Zamboanga) ; 

 ayartigilan, kariskis (Zambales) ; bdhai (Sorsogon) ; fugayong, saplit, na- 

 randauel (Cagayan) ; inep (Bulacan) ; kamakamsilihayi or tigiu, kdsai, 

 tikes, tigi (Rizal) ; malaganeyj, malasdga, tekiii, tikiu (Laguna) ; mara- 

 damortis, tagiiarare (Pangasinan) ; martekkd (Ilocos Sur) ; pangmarung- 

 gdyen (Isabela) ; tagomtdgom (Samar) ; 7mip (Bataan). 



The leaves of this plant are used in giving a gray color to 

 buri.* 



Pithecolobium subacutum is a tree reaching a height of 6 to 12 



* Miller, H. H., Minier, J. F., Andes, U. S., Muller, T., and Brezina, A., 

 Philippine mats. Philippine Craftsman, Volume 1 (1912), page 161. 



