The Principles of Leather Manufacture

by H. R. Procter

SANTALACEÆ.

Osyris compressa (Fusanus compressus, Colpoon compressum, Thesium Colpoon), “Cape Sumach,” “Pruim Bast,” leaves and bark, Cape of Good Hope. Leaves contain about 23 per cent. of tannin and form a useful substitute for sumach; but the tannin is not identical, and is of the catechol class, resembling gambier.

O. arborea. Northern India. Leaves rich in tannin.

Fusanus acuminatus (Santalum acuminatum), “Quandony.” Australia. 18-19 per cent. tannin, dark coloured.

Exocarpus cupressiformis. Australia. Bark contains 15 per cent. tannin.

DAPHNOIDÆ, Spurge Laurels.

Daphne Cnidium L., “Garou.” Algeria. Used for dyeing and tanning.

PROTEACEÆ.

Banksia serrata, Heath Honeysuckle. Australia. Specimen examined contained 11 per cent. tannin; according to Maiden it reaches 23 per cent.

Banksia integrifolia. Queensland. Bark contains 11 per cent. tannin.