584 Philippine Journal of Science 1919 
TABLE VIII.—Physical tests of rope made of Abroma fastuosa. 
Crude fiber : 
strips; not | Fairly clean» 
Mean diameter: 
WRN oe ek nee occas oe 11.5 6.1 
PRUNE Sachs ok 5 oe Seek Ca cU cea paek ss bebo enor eee ees 0.45 0. 24 
Mean perimeter, or girth: 
PR Oe ok pcb ani una oe ween on se- Soca w es Sones 36 19 
PON a ee es aes oc wkabem ee war oe 1, 42 0. 75 
True mean sectional area: 
aare Mimelere. oo os oe i oo he Ca peewee canes 88.4 24.4 
PRN rs Se ee a oe a 0.187 0. 087 
Ultimate tensile strength (dry): 
AS TEL CLOG PONGE Soo cen een kat een oe ha pee 482 157 
PEUAENIN 117 RIORET OIE do aise ko ag eck ewnnuaw ans eee 583 166 
Peratinily $F NOG TANS oa eo eS. Cope s ae Sea eS ee ss 888 147 
pS Geet bro | Puan, sah cper Salen eh wee yey peng, Sue sinner ase SE eee 1, 063 345 
Masti WiepOtnas bau ne oe oe oot one co eeeeanee cons 1, 285 365 
= MR TRbeTIE PT OMNIOE oa ence cameun census sohnen sss 855 | 825 
Ultimate tensile strength (wet): | 
Moan tu bie i SS ie, ences ks 282 (e) 
Dinxtrauien tr: hilearratete 5 es cs known dcecen ens ae 336 (*) 
WIIG UTE Sk TIO ERION os oe eee ee es 220 (c) 
leary 1 OR ss oe a wa cate ec ew Se bw ew 621 (c) 
Mantitnumeinr pounds eso 222 aes ccs ee cee 740 (c) 
Minti 1h GOONGE 556 ee 485 {c) 
Mean ultimate tensile strength per unit area (dry): 
Kvlowrams per square centimeter o>: 25s oc Sina 545 643 
Pounce PGF BAUATOANCR as sss a a cca cne seems cdots 7, 760 9, 100 
Mean ultimate tensile strength per unit area (wet): 
Kilograms per square centimeter ________-.._.....--.-.------------ 319 (ce) 
Pounds pee midare eho 4, 530 (ce) 
Mean elongation at instant of rupture: 
Te eka a ee gi as per cent_. 12 (ec) 
WE ee ee ee ee eS C02. .¢ 13 {c) 
Mean weight per unit length: 
GPAIMG POL TONE noses chap ed ieee a ook: Soe cs 83.7 20.2 
Pounds: per 160ts ns a a ee ee ae 0. 0562 0, 0136 
Average breaking length: 
Meters chip enbagsa clea eeecspeb esau ree eee cst ia heer 5, 770 7, T40 
Btebii oi 5. vane Cannes ene ne te a ae 18, 900 25, 400 
Moletare. so 25 oe ae ee per cent__ 13. 67 14.3 
* Made at Disdis, Benguet Subprovince. » Made at Sappaac, Abra Province. ° No test 
made. : 
Comparative tests performed by Roxburgh *° on the tensile 
strength of two “lines” made of Abroma fastuosa bast in the 
dry and wet condition, respectively, show an average gain of 12 
pounds for the wetted line made from the fiber procured from 
* Through Royle, Forbes, Fibrous Plants of India Fitted for Cordage, 
Clothing, and Paper. Smith, Elder and Co., London; Smith, Taylor 
and Co., Bombay (1855) 268. 
