Foreign Vegetables. 133 
Phlegm, which was almoft infipid ; nine Drachms 
of urinous Spirit, mixed with a fmall Portion of 
thick and bituminous Oil. The Mafs remaining 
in the Retort weighed one Ounce *, which being 
calcined for three Flours, afforded twenty five 
Grains of fixt Salt. The Lofs of volatile Parts, 
both in Diftillation and Calcination, was one Drachm 
and thirty Grains. 
Three Ounces of Coral, frefh and cleared of jts 
Bark, yielded eighteen Grains of whitifh Phlegm, 
and forty eight Grains of urinous Spirit, with a 
little bituminous Oil. The Weight of the Refi - 
duum was two. Ounces \ from which were got, by 
Lixiviation, thirty five Grains of fixt Salt. The 
Lofs in Diftillation and Calcination was about 
thirty five Grains. 
From three Ounces of Coral, taken out of the 
Sea a Year and Half before, came over thirty 
Grains of urinous Phlegm mingled with bitumi- 
nous Oil. The Refiduum weighed two Ounces, 
feven Drachms and thirty Grains ; from which, 
after Calcination, were obtained twenty five Grains 
of fixt neutral Salt. The Lofs in the' Operation 
was thirty fix Grains. 
The urinous Spirit turned the Syrup of Violets 
green, fermented with acid Liquors, and changed 
the Solution of corrofive Sublimate into a milky 
Coagulum. The fixt Salt, extracted from the Caput 
mortuum , occafioned a white Coagulum in the Solu- 
tion of corrofive Sublimate. Whence it appears 
that this fixt Salt is not purely alkaline, but faline. 
Red Coral being calcined in an open Fire lofes 
its Rednefs, and becomes of a pale Colour, or 
white. It likewife turns white by being macerated 
a long Time and boiled in certain Oils, as Oil of 
Anife, Fennel, Citron, Cfc. and the Menftrua re- 
ceive a red Colour : But no fuch Change is effected 
by boiling it in aqueous Liquors. 
K 3 We 
