�y��vlog

Iodides.—Iodides are treated, as the bromides and chlorides, in a bead of microcosmic salt with oxide of copper.

The angular concretions to the sides of the pot, formed as the urine cools, is microcosmic salt.

The insolubility of a fragment of the mineral in a bead of microcosmic salt, is also a very good test; the fragment, on prolonged heating, does not lose its angular form.

Strontia or its compounds produce with borax, or microcosmic salt, the same reactions as baryta.

From the human system it is excreted by the kidneys as microcosmic salt, HNaNH4PO4; and when the brain is hard- worked, more than usual is excreted.