This is the prepared fat of the hog. When used as a protective, it should contain no common salt, and must be perfectly free from ran-cidity. it need scarcely be stated that lard taken internally is highly nutritious. its use as an ingredient of laxative enemata has been already mentioned.

Alone, it is more frequently used as a protective to irritated surfaces than the liquid oils; and is sometimes, especially in cold weather, applied as a dressing to wounds and blisters; but it is too diffluent, at the temperature of the body, to be used advantageously for this purpose, unless incorporated with some firmer material.

A few years since, lard attracted much attention, and was extensively used as an external remedy in scarlet fever. it was introduced into use for this purpose by Dr. Schneemann, of Hanover, Germany, who employed it in the form of fat bacon. The whole surface, excepting the scalp and face, was rubbed with it night and morning. I have not used the remedy; but have been informed by medical friends that they have found it very successful; and favourable reports of it have been pub-, lished. it probably acts by protecting the surface against the oxygenizing influence of the air, which may be necessary, or at least contribute .to the maintenance of the eruption.

The preparations in which lard is chiefly used as a protective agent will be mentioned directly. Like olive oil, it is much employed as a vehicle or diluent of acrid or irritant substances.