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See also:SUNN, or See also:INDIA See also:HEMP (Crotalaria juncea)
, a plant which is a native of See also:India and See also:Ceylon
.
It frequently receives other names, e.g. false See also:hemp, See also: There is the same danger of over-retting and underretting as in other See also:fibres, but when the retting is See also:complete, the workmen enter the ponds, take up a handful of stems, and swish them upon the surface of the water until the fibre becomes loose . After the fibre has been peeled off it is hung over poles to dry . When intended for See also:cloth it is combed in See also:order to remove any See also:foreign See also:matter, but if it is intended to be used for rope or similar purposes, the fibres are simply separated and the woody matter combed out with the fingers . The fibre is of a light See also:grey See also:colour, and has an See also:average length of 3 to 4 ft . It is extensively used for rope and cordage and also for See also:paper-making in its native See also:country, but it has made little, if any, progress in this country . According to See also:Warden, the fibre was tried in See also:Dundee in the beginning of the 19th See also:century . About 1820 the See also:price of India hemp See also:bagging, as quoted in the Dundee Advertiser, was lid. per yard below hemp bagging, and ;d. a yard below See also:tow warp bagging . It is stated in See also:Sir G . See also:Watt's See also:Dictionary of the Economic Products of India that a See also:cord 8 in. in See also:size of best See also:Petersburg hemp See also:broke with 14 tons, 8 cwt . 1 qr., while a similar rope of See also:sunn only gave way with 15 tons, 7 cwt. i qr . Roxburgh's experiments with See also:ropes made from this and other fibres appear on p . 607 of the above See also:work .
The ropes were tested in the fresh See also:state, and also after having been immersed in water for See also:Ito days
.
His results, reproduced in the following table, show the comparison
.
Average See also:Weight at which each sort of See also:line broke
.
Names of the See also:Plants
.
When fresh
.
After Ile days' macera-
tion
.
See also: Hemp from the See also:East 74 139 ± All rotten . IndiaCompany's See also:farm 45 near See also:Calcutta . . } 68 69 ----- Rotten 51 65 6o Sunn hemp of the See also:Ben- galese See also:lute (Bunghi-pat) . ---- 4o - 49 ------ 68 0 69 6i It would appear that, after maceration, neither See also:ordinary hemp nor sunn hemp can compare with jute for strength . |
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