The internal fat of the abdomen of the sheep, Oris Aries, purified by melting and straining.

Characters. - White, smooth, almost scentless; fusible at 103° F. Composition. - Consists principally of stearin.

B.P. Preparations.

Emplastrum Cantharidis.

Unguentum Hydrargyri.

Use. - Used in the preparation of certain unguenta and emplastra.