Ointments are soft, fatty solids of such consistency that they are readily spread at ordinary temperatures. When intended for systemic effect they are applied by inunction; ordinarily they are used as simple protectives.

For preparations included in this list see: Unguentum Acidi Borici, under Acidum Boricum. Unguentum Belladonnae. under Belladonnae Folia. Unguentum Chrysarobini, under Chrysarobinum. Unguentum Hydrargyri, under Hydrargyrum. Unguentum Hydrargyri Ammoniati, under Hydrargyrum Ammoniatum.

Unguentum Hydrargyri Dilutum, under Hydrargyrum.

Unguentum Hydrargyri Oxidi Flavi, under Hydrargyri Oxidum Flavum.

Unguentum Picis Liquidae, under Pix Liquida. Unguentum Sulphuris, under Sulphur. Unguentum Zinci Oxidi, under Zinci Oxidum.

Urotropin.

See Under Hexamethylenamina.