638 Philippine Journal of Science 1919 
Table XXXVIII. — Physical tests of 7'ope made from the bast of Trema 
orientalis — Continued. 
Ultimate tensile strength (dry) : 
Mean in kilograms 
62. 
Maximum in kilograms 
79 
Minimum in kilograms 
46.' 
Mean in pounds 
138 
Maximum in pounds 
174 
Minimum in pounds 
103 
Ultimate tensile strength (wet) : 
Mean in kilograms 
122 
Maximum in kilograms 
122 
Minimum in kilograms 
121 
Mean in pounds 
268 
Maximum in pounds 
269 
Minimum in pounds 
267 
Mean ultimate tensile strength per unit area 
(dry) : 
Kilograms per square centimeter 
134 
Pounds per square inch 
1,920 
Mean ultimate tensile strength per unit area 
(wet) : 
Kilograms per square centimeter 
262 
Pounds per square inch 
3,720 
Mean elongation at instant of rupture: 
Dry (per cent) 
7 
Wet (per cent) 
21 
Mean weight per unit length: 
Grams per meter 
44. 
Pounds per foot 
0. 
Average breaking length: 
Meters 
1,420 
Feet 
4,660 
Moisture (per cent) 
8. 
ANNONACEAE 
GONIOTHALAMUS AMUYON Blanco. Amuyong. 
Local names: Amuyong (Tayabas) ; lanutan (Occidental Negros); sa- 
gidt (Ilocano, Abra). 
A glabrous tree with oblong coriaceous leaves, rather large 
flowers, and cylindric, elongated aromatic fruits; of local occur- 
rence, but widely distributed at low altitudes in the Philippines. 
The most conspicuous characteristic of Goniothalamus amuyon 
bast is its attractive apricot-buff color. Like most of the basts 
tested, the fiber of this rope is in the form of strips, which 
average 3 millimeters vdde, 0.33 millimeter thick, and 794 milli- 
meters long. 
When dry, rope made of this bast is very low in tensile 
strength and breaking length. Wetting reduces the mean ten- 
sile strength 15 per cent. The wet specimens gave very uniform 
