Note 715 — PHARMACOLOGIA. (continued 8)
Reading edition
Four ounces, troy, of mercurial ointment, prepared six months before, were kept at 212°, when it separated into two distinct strata, viz. the upper one which was light grey, and extremely active as a medicine, and the under one, which upon being triturated with magnesia, yielded a large proportion of metallic mercury, and which was not found to possess any activity.