Gelatinum Chondri (N. F.)—Irish Moss Gelatin.
Preparation.—Formulary number, 184: "Irish moss, one thousand grammes 1000 Gm.) [2 lbs. av., 3 ozs., 120 grs.]; water a sufficient quantity. Wash the Irish moss with cold water, then place it in a suitable vessel, and add fifty thousand cubic centimeters (50,000 Cc.) [about 106 pints] of hot water, and heat it on a boiling water-bath for 15 minutes, frequently stirring. Strain the decoction, while hot, through a strong muslin strainer; return the strained, mucilaginous liquid to the water-bath, evaporate it to a semi-fluid consistence, then transfer it to shallow, flat-bottomed trays, and evaporate it at a temperature not exceeding 90° C. (194° F.), so that the gelatin may become detached in scales. Note.—Irish moss gelatin thus prepared furnishes a mucilage of Irish moss which is opaque, like that made directly from the moss itself. It maybe prepared so as to yield a transparent mucilage by following the plan pointed out in the Note to Mucilago Chondri (F. 275)"—(Nat. Form.).
Action and Medical Uses.—(See Chondrus.)
King's American Dispensatory, 1898, was written by Harvey Wickes Felter, M.D., and John Uri Lloyd, Phr. M., Ph. D.