614 Philippine Journal of Science i 9 i» 
Table XXIV . — Physical tests of rope made from the bast of Corchorus 
olitorius. 
[Rope made at Langiden, Abra Province.] 
Mean diameter; 
Millimeters 7.0 
Inches 0.28 
Mean perimeter, or girth; 
Millimeters 22 
Inches 0.87 
True mean sectional area; 
Square millimeters 32.8 
Square inches 0.051 
Ultimate tensile strength (dry) ; 
Mean in kilograms 165 
Maximum in kilograms 176 
Minimum in kilograms 156 
Mean in pounds 364 
Maximum in pounds 388 
Minimum in pounds 344 
Ultimate tensile strength (wet) ; 
Mean in kilograms 118 
Maximum in kilograms 139 
Minimum in kilograms 97.9 
Mean in pounds 260 
Maximum in pounds 306 
Minimum in pounds 216 
Mean ultimate tensile strength per unit area (dry) ; 
Kilograms per square centimeter 503 
Pounds per square inch 7,130 
Mean ultimate tensile strength per unit area (wet) ; 
Kilograms per square centimeter 360 
Pounds per square inch 5,100 
Mean elongation at instant of rupture; 
Dry (per cent) 8 
Wet (per cent) 10 
Mean weight per unit length; 
Grams per meter 30.5 
Pounds per foot 0.0205 
Average breaking length ; 
Meters 5,420 
Feet 17,800 
Moisture (per cent) 9.33 
GREWIA BILAM ELLATA Gagnep. Benglareng. 
Local names; Benglaleng or benglareng (Ilocano and Itneg) ; dongrareng 
(Ilocano) . 
A shrub v/ith oblong, nearly glabrous, green leaves, and small, 
glabrous, somewhat fleshy fruits; allied to Grewia multiflora 
Juss. 
