FIG. 7.
Microscopic features.—Compact bundles. Fibres show striæ and fissures, and often fibrillæ, detached or adherent. The central canal almost obliterated, ends of fibres large and flattened. The bundles show fine transverse markings. {50}
Section.—Well marked concentric zones of fibre substance, irregular in outline.
Micro-chemical reaction.—Blue and yellow reaction with iodine solution, the joint result showing green colouration.
General chemical characteristic.—Pecto-cellulose.
| Müller. | |
|---|---|
| Cellulose | 77·13 |
| Fat and wax | ·55 |
| Aqueous extract | 3·45 |
| Pectous substances | 9·25 |
| Water | 8·80 |
| Ash | 0·82 |
Forms in which employed.—Scutching refuse, spinning waste, threads, cuttings and rope ends.
SUNDA or SUNN HEMP.
Microscopic features.—Generally similar to those of hemp.