Foreign Vegetables. 335 
left two Ounces and one Drachm of a gummous 
Extradl. 
In like Manner four Ounces of hepatick Aloes 
being wholly diflfolved in boiling Water, and the 
Solution having flood fome Time to cool, a refi- 
nous Sediment fubfided. This, feparated from the 
Liquor above it, and dried, was two Ounces in 
Weight •, from which he got, by the Means of 
Spirit of Wine, eleven Drachms of an inflammable 
refinous Extradl, four Drachms of a Saline earthy 
Subfiance remaining ; which I fufpedl to be an ef- 
fential Salt nearly refembling Tartar. From the aque- 
ous Solution evaporated he obtained nine Drachms 
of a gummous Extradl. 
In thefe Procefles the Lofs of Parts was very con- 
fiderable, (viz.) feven Drachms and fixty Grains 
from the Soccotrine Aloes •, and five Drachms from 
the hepatick. Whence we may conclude that in 
the Soccotrine Aloes is contained a larger Stock of 
volatile Parts, whether faline or fulphureous, than 
in the hepatick *, about half as much Refin ; almofl 
double the Quantity of Gum ; and very little Earth 
and fixt Salt. 
The fame ingenious Author found by Experi- 
ence that the Refin is void of cathartick Virtue, 
which refides only in the Gum, and that this 
even purges more flrongly when feparated from 
the Refin. He likewife afierts that the Soccotrine 
Aloes purges more violently than the hepatick : 
And indeed the Soccotrine is more plentifully flocked 
with volatile and adlive Parts, to which the cathar- 
tick Quality is principally owing. Befides, the fa- 
line Part in the hepatick is duly tempered with the 
refinous, and not fo in the Soccotrine. Neither is 
the Soccotrine preferable for external Ufe, but, on 
the contrary, greatly inferior to the hepatick, which 
includes a larger Stock of fulphureous and balfamick 
Parts, 
