578 Philippine Journal of Science 1919 
TABLE V.—Breaking lengths of Philippine handmade bast-fiber ropes and 
miscellaneous, ete—Continued. 
ROPES MADE OF MISCELLANEOUS FIBERS. 
No. Fiber. | ge cpa 
Meters. Feet. 
1 | Musa textilis; grade ‘“F’’ abacd; rope, 31 mm. in circumference _--.----- 12,300 | 40,400 
2 | Musa textilis; grade “F’’ abac4; rope, 15 mm. in circumference 4_-------- 11,900 | 39,000 
8 | Musa textilis; grade ‘‘G’’ abac4; rope, 16 mm. in cireumference*_-------- 10,200 | 38,300 
4 | Agave cantala; maguey; grade, Cebu No. 24 _.--------------------------- 9,350 | 30,700 
5 | Musa textilis; grade ““G’’ abacd4; rope, 26 mm. in circumference --------- 8,390 | 27,500 
6|A Wie esc Sie a ea as SA ses ese oaks, 5,530 | 18,150 
2| Dendrocalamus merrillianus b ___....-.---------------------------------- 8,800 | 12,450 
8 | Corypha elata; buntal ._-._-......---- ------------------------------------ 3,700 | 12,100 
9 | Cocos nucifera; rope, 24 mm. in circumference ---...--------------------- 8,550 | 11,650 
Ti} Ammiria cotoulus. © 25. ese on eae ee tenes ce ecnns pee 3,200 | 10,500 
11 | Cocos nucifera; rope, 44 mm. in circumference 4 ___.__..----------------- 2, 730 8, 950 
12 | Cocos nucifera; rope, 50 mm. in circumference ¢__.----------------------- 2, 620 8, 610 
2 Machine-made rope; all other ropes are handmade. 
> This rope has two strands only; all other ropes have three strands. 
© Rope made of the entire stem of the vine. 
4 Rope made of coir that had been machine cleaned at the Bureau of Science from Laguna 
husks. 
* Rope made at Caoayan, Ilocos Sur, from salt-water retted coir. 
In Table V ropes made of Philippine fibers are arranged in 
two groups. 
The first group is devoted to handmade bast-fiber ropes and 
the second to hand- and machine-made ropes of miscellaneous 
fibers. The order of succession is not always the same, as will 
be seen by a comparison of the relative positions given to the 
various fibers in Tables IV and V; in the latter they are listed 
in the order of their breaking length, while in the former they 
are tabulated in the order of their dry tensile strength per unit 
area. The tensile strength per unit area does not take into 
consideration the actual weight of the fiber, and the two series 
must necessarily vary whenever there is a variation in the spe- 
cific gravity of the materials. Rope made of the fiber of Helic- 
teres hirsuta ranks ninth in tensile strength, but twenty-second 
when classified as to its breaking length. This irregularity is 
readily comprehended by reference to Table XLII, which shows 
that the rope made of this fiber is one of the heaviest tested. 
Moisture.—Three pieces, each about 20 centimeters long, were 
cut from three different places in each coil'of rope, and the 
samples were dried to constant weight at a temperature of 
103° C. in a Freas electric oven. The dry weight was taken as 
the basis on which to compute the percentage of moisture. The 
