Foreign V e getables, 265 
Thefc Refins are both the fame •, only that the 
iirft diftils in Drops from flight Incifions or Cracks 
in the Tree, and is therefore fpeedily dried and 
gathered : But the other flowing from largerWounds 
in much greater Quantities, requires a longer Time 
to dry : So that by the Heat, and A&ion of the 
Air, the Colour inclines more and more to red, or 
at length grows blackifli. Storax ought to be 
chofen bright and pure, without any Mixture of 
Saw-duft, or other Drofs, and of a fragrant Smell. 
The Tree is the Sly rax folio Mali Coionei, C. B. P. 
452. et Inft. R. H. 598. It grows in Provence and 
Italy, where it yields but little Refln, what we ufe 
in the Shops being got from Trees which grow in 
Syria and Caramania. 
In a chymical Analyfis two Pounds of pure Sto- 
rax yielded two Ounces, feven Drachms and forty 
eight Grains of Phlegm, which was tranfparent, 
reddifli and acid, with a refinous Smell like Storax ; 
one Ounde, five Drachms and thirty fix Grains of 
reddifli and tranfparent eflential Oil ; two Ounces 
and two Drachms of thick Oil of the Confiftence 
of Honey, together with fome volatile Salt, or faline 
Flowers like thofe of Benzoine ; (this Subftance, 
which was fomething like Butter, after ftanding 
three or four Days was almoft wholly difiolved into 
Oil) at laft three Ounces and three Drachms of 
fluid reddifli Oil fome what empyreumatick. The 
black Mafs remaining in the Retort weighed nine 
Ounces and five Drachms, which being calcined in 
a Crucible for twenty Hours, left one Ounce and 
four Drachms, and the black Colour was changed 
to a yellowifti brown. From thefe were got, by 
Lixiviation, feven Grains of fixt neutral Salt. The 
Lofs of Parts in Diftillation was four Ounces and 
fixty Grains, and in Calcination eight Ounces and 
one Drachm. Hence it appears that Storax is a 
Refin 
