Note 197 — MINERALS.
Reading edition
ALUM is a substance of yellowish or greyish white colour, usually opaque, but sometimes transparent. When purified, it consists of slender, irregular, hair-shaped fibres, and has a sweetish, astringent taste.
Reading edition
ALUM is a substance of yellowish or greyish white colour, usually opaque, but sometimes transparent. When purified, it consists of slender, irregular, hair-shaped fibres, and has a sweetish, astringent taste.