It combines with several organic substances, imparting to them peculiar colors.

It colors the skin brown, but the stain soon disappears.
Chloride of Iodine--Is formed by passing chlorine into a bottle containing some iodine.

This can be readily done by pouring one ounce and a half of muriatic acid upon a quarter of an ounce of powdered black oxide of manganese, and heat it gradually in a flask, to which is adapted a bent glass tube.

This tube must connect with the bottle containing the iodine, and the yellowish-green gas disengaged will readily combine with the iodine, forming a deep red liquid, and the operation is complete.

The use of chloride of iodine will be referred to in connection with the Accelerators.
{86} Iodides .-- The iodide treated with the oil of vitriol, instantly produces a considerable deposit of iodine; and if the mixture be heated, intense violent vapors are disengaged.