The Principles of Leather Manufacture

by H. R. Procter

Fig. 58.[149]—Algarobilla (Cæsalpinia brevifolia).

[149] ‘New Commercial Drugs and Plants,’ No. 5, T. Christy.

C. echinata yields “Brazil-wood.” (See [p. 413].)

C. Sappan, Sappan-wood, India.

Cassia auriculata, Turwar or Tanghadi bark, Southern India. Used for tanning so-called “Persian” sheep- and goat-skins, contains about 17 per cent. of a catechol tannin. Leather tanned with it is of a pale yellow colour, but rapidly reddens in sunlight. Cp. [p. 235].

C. fistula, India. Husk of pod, 17 per cent. tannin. The pulp of pod is used as an aperient.

C. elongata and lanceolata. Senna leaves. Upper Egypt.

C. Sophora, “Bali-babilan.”