The swimming-bladder or sound of Acipenser Huso, and other species of Aci-penser.

Properties. - In fine shreds, B.P.; in separate sheets, etc., U.S.P.

Composition. - It consists of gelatine, which is precipitated by tannic acid.

Preparations.

B.P.. Solution of Gelatine.

U.S.P

Emplastrum Ichthyocollae (Court Plaster).

Uses. - Gelatine baths are useful in soothing the irritation of the skin in urticaria. Gelatine is, however, chiefly used as a food in soups and in jellies for convalescents and those suffering from chronic diseases. It will not, however, supply the place of ordinary albumen as a food.