638 Philippine Journal of Science : 1919 
TABLE XXXVIII.—Physical tests of rope made from the bast of Trema 
orientalis—Continued. 
Ultimate tensile strength (dry): 
Mean in kilograms 62.6 
Maximum in kilograms 79 
Minimum in kilograms 46.7 
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 . 44.1 
Pounds per foot 0.0296 
Average breaking length: 
Meters 1,420 
Feet 4,660 
Moisture (per cent) 8.90 
ANNONACEAE 
GONIOTHALAMUS AMUYON Blanco. Amuyong. 
Local names: Amiiyong (Tayabas); lantitan (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 wide, 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 
