XIV, 6 Kiyig: Philippine Bast-fiber Ropes 593 
Table XIII. — Physical tests of rope made from the hast of Pterocymbium 
tinctorimn. 
[Rope made at Disdis, Benguet Subprovince.] 
Mean diameter: 
Millimeters 
13.4 
Inches 
0.53 
Mean perimeter, or girth: 
Millimeters 
42 
Inches 
1.66 
True mean sectional area: 
Square millimeters 
114.0 
Square inches 
0.177 
Ultimate tensile strength (dry) : 
Mean in kilograms 
435 
Maximum in kilograms 
531 
Minimum in kilograms 
322 
Mean in pounds 
959 
Maximum in pounds 
1,170 
Minimum in pounds 
710 
Ultimate tensile strength (wet) : 
Mean in kilograms 
496 
Maximum in kilograms 
587 
Minimum in kilograms 
424 
Mean in pounds 
1,093 
Maximum in pounds 
1,295 
Minimum in pounds 
935 
Mean ultimate tensile strength per unit area 
(dry) : 
Kilograms per square centimeter 
381 
Pounds per square inch 
5,420 
Mean ultimate tensile strength per unit area 
(wet) : 
Kilograms per square centimeter 
435 
Pounds per square inch 
6,180 
Mean elongation at instant of rupture: 
Dry (per cent) 
10 
Wet (per cent) 
12 
Mean weight per unit length: 
Grams per meter 
95.4 
Pounds per foot 
0.0642 
Average breaking length: 
Meters 
4,560 
Feet 
14,900 
Moisture (per cent) 
11.87 
STERCULIA CRASSIRAMEA Merr. Tapinag. 
Local names: Adupong (Benguet) ; balinad (Palawan, Ticao) ; banikad 
(Mindoro) ; banilad (Guimaras, Mindoro, Rizal) ; bannakalau or baniaka- 
law (Abra, Benguet, Ilocos Norte, Ilocos Sur) ; kalukalumpdngan (Rizal) ; 
malakapai, malapapaya, tapinag (Bataan); palak-palak (Bulacan). 
A large deciduous tree with broadly ovate, cordate, entire, 
densely pubescent leaves; ample panicles of small flowers; and 
166167 3 
