320 ^ Treatise on 
and in burning difperfes an Odour not unpleafant. 
The belt is friable, light, of an uniform Colour, 
bitter, acrid, and of a quick Smell. When it is 
black, heavy, and mixed with Drofs, it is bad. 
It is brought from that Part of j E thiopia which was 
formerly called the Country of the Troglodyte. 
Of the Tree which produces this Drug we have 
no certain Knowledge. 
In a chymical Analyfis , two Pounds of choice 
Myrrh yielded three Ounces, and four Drachms, 
of reddifh Phlegm, partaking of the Smell and 
Tade of Myrrh *, four Ounces, feven Drachms, 
and thirty four Grains of audere acid Liquor ; one 
Ounce and five Drachms of Liquor, both acid and 
urinous *, one Ounce, feven Drachms, and thirty 
two Grains of red Oil, which was tranfparent and 
fcented ; three Ounces, fix Drachms, and thirty fix 
Grains of brown Oil, fomewhat empyreumatick, 
and of a thicker Confidence, like Syrup. The 4 
black Mafs remaining in the Retort weighed nine 
Ounces, fix Drachms, and fifty four Grains * which 
being calcined for twenty fix Hours afforded two 
Ounces, three Drachms, and thirty fix Grains of 
red Afhes. From thefe were drawn by Lixiviation 
eighteen Grains of fixt neutral Salt. The Lofs of 
Parts in Didillation was fix Ounces, two Drachms, 
and feventy Grains •, and in Calcination feven Ounces, 
three Drachms, and eighteen Grains. 
Myrrh takes Flame, like a Refin •, though it does 
not perfectly diffolve, like Refins, in oily Sub- 
dances, but partly runs into Grumes : Nor does it 
freely diffolve, like a Gum, in Water ^ but the 
greater Part remains undiilblved, appearing like 
Mud. Rectified Spirit of Wine, by a long Di- 
geflion, extracts the refinous Part, the Gum only 
remaining, quite void of Smell and Bitternefs, which 
is foluble in Water, or at lead foftens, and is con- 
i verted 
