MATERIA MED 1C A. 121 



as DRAGON'S BLOOD, used for colouring plasters, 

 tooth-powders, and varnishes. 



AROIDE^E. 



Rhaphidophora, sp., probably R. vitiensis, Schott, 

 produces the root and stems which, together with the 

 inactive leaves of the Verbenaceous Premna taitensis, 

 Schauer, form the bulk of the native remedy known 

 as TONGA, which has been found very efficacious in 

 neuralgia.* 



Acorus Calamus, L., the SWEET SEDGE, a natura- 

 lized British plant, yields an aromatic stimulant and 

 tonic bitter from its rhizome, used in herb-beers, gin, 

 and snuff, for chewing to clear the voice, for ague and 

 dyspepsia. It is imported from South Russia, via 

 Germany, f 



Urginea Scilla, Steinheil ( = U. maritima, Baker, 

 = Scilla maritima, L.), a Mediterranean species, yields 

 the bulb known as SQUILLS, imported from Malta for 

 use as an expectorant and diuretic. In larger doses 

 it is an uncertain emetic and purgative.J 



Aloe vulgaris, Lamarck, the COMMON or BARBA- 

 DOS ALOE, which grows wild from India to the South 

 of Spain and the Canaries, and is cultivated in the 

 West Indies ; A. succotrina, Lam., the SOCOTRINE 

 ALOE, imported vid Zanzibar and Bombay ; and A . 

 spicata, L. fil., the CAPE ALOE, and other varieties, 



Pharm. Journ.,' x (1880), p. ^y. 

 t ' Pharmacographia,' p. 613; Bentley and Trimen, iv, pi. 

 779. 

 \ Ibid., p. 627 ; ibid.) iv, pi. 281. 



