It is made in the distillation and rectification of the Oil of Amber, and is gathered sticking to the neck of the Retort, and thus purified: ℞ Volatil Salt of Amber, not perfectly freed from its foetid Oil, q.v. with this mix so much decrepitated Salt, as may make it into a dry sub∣stance, and sublime from an earthen Vessel, covered with a paper Pyramidal-head; let the Fire be cautiously managed, left the Paper-head be burnt: so will you have the volatil Salt of Amber, like lint or down, and free from all manner of ill smell, or scent of burning.
It has the virtues of the Oil, but is much more powerful; good chiefly against Hysterick∣fits, it expels Urine and the Stone, and provokes Sweat. It is good against Paralytick, Apoplectick, Hysterick Diseases, the Running-Gout, and other like Affects; as also, against all cold Diseases. Dose, à gr.iv, ad ℈ j. in some fit Vehicle. It cures Cramps, and is a specifick against the Lethargy, Falling-sickness, and Convul∣sions, &c.