PERIPETALE. 365 
Acacia Catechu ; and the barks of A. vera, and of most other 
species which furnish gum, are highly astringent, and used 
for tanning in some parts of India. Gum Kino is said to be 
obtained from Pterocarpus erinacea, and P. Marsupium. 
Saunderswood, from the P. Santalinus, contains a red co- 
louring matter, used in dyeing. Dragon’s-blood, obtained 
from the P. Draco, has been deemed astringent, but, accord- 
ing to Dr. Duncan, is a pure resin, without any astringency. 
Logwood, the wood of Hematorylon campeachianum, is some- 
what astringent, but used chiefly as a dye. The tops and 
seeds of Broom (Spartium scoparium) are diuretic. Many 
trees in this family furnish a highly nutritious gum, valuable 
in medicine as a pectoral. The well known substance, Gum 
Arabic, is obtained from Acacia vera and A. arabica. Gum 
Tragacanth is the produce of Astragalus Tragacanthus, A. 
_-verus, A. Gummifer, and A. creticus. Some valuable — 
balsams are found among the Leguminose, as Copaiva, 
from the Copaifera officinalis, or Copaifera Jacquini ; 
Copaifera Langsdorfii, and C. coriacea, yield the Copaiva of 
Brazil: Balsam of Peru, from the Myroxolon (or Myrosper- 
mum) peruiferum, and Balsam of Tolu, from the M. tolui- 
ferum or Toluifera balsamum. The mild saccharine and 
mucilaginous substance, called Liquorice, is the extract of 
Glycyrrhiza glabra. Lac is the produce of Erythrina mo- 
- nosperma ; and Gum or Resin Anime, of Hymenea courba- 
_ ril: they are used for varnishing. 
Officinal Plants. 
Papilionacee. aa 
_ Astragalus Tragacanthus. Myroxolon peruiferum, 
_ Astragalus creticus. Myroxolon toluiferum. 
_ Astragalus verus. Geoftrea inermis. ee 
_ Glycyrrhiza glabra. Mucuna pruriens (Dolichos_ 
Pterocarpus Draco. : pruriens. ) 
Pterocarpus Santalinus. Cytisus scoparius (Spartium 
