This section is from the book "An Experimental History Of The Materia Medica", by William Lewis.
Blood-Stone: an elegant iron ore, found either along with the other ores of that metal, or in distinct mines by itself; in irregular masies, convex on one side and angular on the other, generally of a dark reddish colour with more or less of a yellowish cast, very heavy, and of great hardness. Broken longitudinally, it exhibits a number of striae converging to. the smaller end: the transverse fracture appears, of a granulated texture. Exposed to a moderately strong fire, it falls by degrees into scales; and in this state is attracted by the magnet, and gives out its iron to acids, both which have little action upon it in the mass or when barely reduced to powder.
Pulv. e trag. comp. Ph. Lond.
This mineral, finely levigated, and freed from the grosser parts by washing over with water, has long been recommended in hemorr-hagies, fluxes, uterine obstructions, etc. in doses of from one scruple to three or four. We presume, that it is not expected to act any otherwise than by virtue of its ferrugineous matter; and that pure iron itself, or its preparations, are preferable to a stony ore of variable and uncertain contents.