294 A COMPENDIUM OF 
ing less agreeable, otherwise it is dificult to dis- 
tinguish them. It isexportedfrom the Island of 
Barbadoes. Cape Aloes, Aloe Spicata, Aloe Ca- 
pensis or shining Aloes, has been dropped from 
the recent edition of the Dispensatory. ‘This 
species of aloes, however, is of an olive black 
or shining blackish brown color, with an un- 
pleasant odor and not crystalline, and is easily 
distinguished from the other varieties. The 
Natal Aloes is of a lighter shade of brown than 
those already mentioned, but crystalline under 
the microscope and of inferior quality, little 
valued as a medicine. It is exported from Port 
Natal. The plant yielding this Aloe is said to 
be unknown. 
Moka Aloes resembles the aforementioned 
varieties to some degree, but are very much in- 
ferior and are brought from the interior of Ara- 
bia. The Caballine Aloes or Horse Aloes, as 
they are familiarly known, occur in dark col- 
ored opaque masses or fragments, with a ten- 
dency to run together at a temperature of 70 
deg. Fah. They have a disagreeable odor, and 
a bitter, nauseous taste; are mostly used as in- 
gredients to horse powders. Aloes contain 
aloin (a yellow crystalline substance), a so- 
called resin, socaloin, barboloin, nataloin, and a 
trace of volatile oil. Cape aloes does not yield 
aloin. These principles are named after the 
aloes from which they are obtained, The med- 
ical effects of Aloes and its preparations are 
vermifuge, laxative, drastic purgative and em- 
menagogue; dose of the powder 2 to 5 grains. 
It is also given in form of tincture, pills, wine, 
enema and suppository, and enters into combi- 
