640 
Philippine Journal of Science 
1919 
VARIATIONS IN TESTS 
The handmade bast-fiber rope, with one or two exceptions, 
gave very erratic results. Taken as a whole the wet specimens 
gave somewhat more erratic results than the dry ones. For 
the dry specimens the maximum average variation from the 
mean was 17 per cent, and for the wet, 20 per cent. Table XL 
records the maximum variations from the mean in tensile- 
strength tests of five samples, each, of dry and wet rope 
specimens. 
Table XL. — Maximum variation from the mean tensile strength of rope 
in the dry and the wet series of five tests each. 
HANDMADE BAST-FIBER ROPES. 
1 
Fiber. 
Maximum variation 
from mean tensile 
strength. 
Dry 
series. 
Wet 
series. 
Per cent. 
Percent. 
Ahroma fastuosa; unretted bast__ « 
21 
22 
Ahroma fastuosa; retted bast 
»6 
(b) 
20 
26 
17 
11 
17 
30 
26 
18 
Pierospermum diversifolium . 
14 
8 
7 
16 
Sterculia foetida _ .. 
4 
c28 
9 
17 
29 
22 
Bombycidendron vidaiianum . 
18 
30 
20 
6 
12 
* 7 
24 
21 
34 
11 
16 
10 
7 
18 
19 
34 
11 
29 
13 
29 
15 
19 
Artoearpus communis; young bast 
20 
16 
19 
22 
23 
21 
16 
25 
12 
30 
20 
13 
15 
34 
29 
11 
c9 
37 
25 
(4) 
21 
9 
17 
20 
