This historic book may have numerous typos, missing text, images, or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1892. Not illustrated. Excerpt: ... p. 21.) From observations made by F. L. Winckler, it may be inferred that myronic acid exists in .the root combined with potassa, and that it is from the reaction between this acid, myrosine, also existing in the root, and water, that the volatile oil is produced, in the same manner as oil of mustard from mustard seed. (See Smapis.) Horse-radish, when distilled with alcohol, yields none of the oil. (Journ.fur Prakt. Pharm., xviii. 89.) The root may be kept for some time without material injury, if buried in sand in a cool place. It is said that if to the powder of the dried root, which has b DEGREES DEGREESome apparently inert, the emulsion of white mustard seed containing myrosine be added, it reacquires its original irritant properties; so that it is the myrosine and not the royronate of potassium which is injured by drying. Hence the powdered root may be added with advantage to mustard in preparing cataplasms, pediluvia, etc. (Journ. de Pharm. et de Chim., xxvii. 268.)* Medical Properties and Uses. Horse-radish is highly stimulant, exciting the stomach when swallowed, and promoting the secretions, especially that of urine. Externally, it is rubefacient. Its chief use is as a condiment to promote appetite and invigorate digestion; but it is also occasionally employed as a medicine, par. ticularly in dropsy attended with enfeebled digestion and general debility. It has, moreover, been recommended in palsy and chronic rheumatism, both as an internal and an external remedy; and in scorbutic affections is highly esteemed. Cullen found advantage in cases of hoarseness, from the use of a syrup prepared from an infusion of horse-radish and sugar, and slowly swallowed in the quantity of one or two teaspoonfuls, repeated occasionally. The root may be given in the