40 ALT~ALU 
_ For the numerous compound pills, not pharmaceutical, into 
_ which Aloes enter as an active igiedentts {refer you bey 
the article Pills, in Vol. Be: re a 
ae ap 40.—ALTHEA Orricinaris. Common Marsh — 
 Mallows. — 
Orrtcrxat. Althea Folia et Radix. Lond. Radic. Edin. 
‘The leaves and root of Marsh Mallows. 
Cabinet specimens, Jeff. Coll. Nos. 44, 45, 46. ‘Coloured 
figure of the plant, No. 47. | 
Gh 16. Ord. 8. Monadelphia Polyandria. Nat. ord. Colume 
 nifere, Linn. Malvacex, Juss. - 
Gén. char. Cal. double ; the exterior 6 or 9-cleft. Caps 
numerous, 1-seeded. ss 
RS 9 plant indigenous to aoe state. and the borders of 
‘Tivers, ee out all tivated i in this country; 
Root inodorous, 3 ein ‘when chewed 
ered ae sand vellowiohs inte! ~ white and 
fibrous ; contains much mucus, which it yields to water 
by coction. 
_ The mucus of this and other plants differs from the mucilage — 
of gum Arabic, in not being precipitated by silicated ree 
ash, nor affected by red or oxy-sulphate of i iron. 
Meprcat Usz. Used in decoction and infusion of the eaves, 
root, and flowers, in calculous complaints and bowel affec- 
tions ;. the roots boiled and bruised, for an emollient cata-_ 
" plasm; a decoction of the leaves, as a fomentation for abra- 
sions of the cuticle and skin, and in cutaneous eruptions 
_ yielding a sharp ichorous discharge. 
Puarm. Pree. Decoctum althez officinalis. L. Syrupus : 
althze. L. E. 
No. 41.—A.umen. L.E. D.& U.S. Alum. 
Super-sulphas Aluminz et Potasse—Sulphas Aluming. E.— 
_ Cabinet specimens, Jeff. Coll. Nos, 48, 49, 50. 
This well-known salt is a ternary compound of alumina, pot- 
_. ash, and sulphuric acid. It is often found native, as at 
: Gottwig in Austria, effloresced on bituminous schistus— _ 
and frequently united with the soil, in volcanic regions, a5 
at Solfatara, near Naples ; where the gu rocesses neCeS> — 
Sary for its extraction, are lixiyiation anc ee 
these are performed in pans sunk in the ¢ 
of which is sufficient to carry on the evaporation. 
chief Sahn: alum of commerce is obtained si peor 
