King: Philippine^ Bast-fiber Ropes 
XIV, 6 
641 
Table XL . — Maximum variation from the mean tensile strength of rope 
in the dry and the wet series of five tests each — Continued. 
MACHINE-LAID EOPES MADE OF COMMERCIAL CORDAGE FIBERS. 
Fiber. 
Maximum variation 
from mean tensile 
strength. 
Dry 
series. 
Wet 
series. 
Musa textilis; grade “F” abacd rope, 31 millimeters in circumference 
Per cent. 
5 
Per cent. 
8 
Musa textilis: grade "‘F” abacd rope, 15 millimeters in circumference 
10 
13 
Musa textilis: grade “G" abacd rope, 26 millimeters in circumference . 
7 
6 
Musa textilis; grade “G” abacd rope, 16 millimeters in circumference __ _ . 
8 
IB 
Agave cantata; maguey, grade Cebu No. 2, rope, 26 millimeters in circum- 
8 
11 
7 
11 
HAND-LAID ROPES MADE OF MISCELLANEOUS FIBERS. 
Cocos nucifera; rope 50 millimeters in circumference . 
Cocos nucifera; rope 44 millimeters in circumference . 
Cocos nucifera; rope 24 millimeters in circumference . 
Coi'vpha data; buntal 
Amo7num ep 
Anamirta cocculus 
Dendrocalamus ^nerrillianus 
Average . 
8 
dl2 
8 
d2 
25 
20 
11 
10 
15 
18 
14 
«10 
29 
19 
16 
13 
“ Three tests only. 
^ No test made. 
® Four tests only, 
^ Only two tests made and these are practically identical. 
In Table XLI are tabulated the number of rope test speci- 
mens ruptured, together with the manner of their failure. Two 
hundred forty-eight dry specimens were broken, of which 122, 
or 49 per cent, failed in eye-splices. Of the 217 wet test pieces 
78, or 36 per cent, ruptured in eye-splices. 
Fifty-seven per cent of the dry, and 69 per cent of the wet, 
specimens that gave maximum tensile-strength values failed 
in the unspliced portion of the test pieces. Breaks in eye- 
splices do not necessarily imply that the various test specimens 
are faulty, abnormal, or low in value ; for frequently the 
minimum values in both wet and dry specimens were obtained 
from those that failed in the unspliced portion of the rope 
between the eye-splices, whereas the maximum values were 
often obtained for pieces that ruptured in the eye-splices. 
In the dry specimens the number of breaks and of maximum 
values from test pieces breaking in the eye-splices is about 
equal to the number of those obtained from test pieces that 
166157 6 
