Another goblet! quick! and stir Pomegranate juice and drops of myrrh And calamus therein. —Longfellow: Golden Legend, III. Acorus calamus, commonly known as Calamus, sweet flag and cinnamon sedge, is a reed-like plant common in Europe and Northern United States. It grows in swamps, marshes and very moist places. It is a herbaceous perennial growing from spreading fleshy rhizomes. The long, sword-like, deep green, pointed leaves grow up from the rhizomes. The history of this plant dates back to remote antiquity, yet there is considerable uncertainty as regards the identity of the various plants which have at various periods been supposed to be sweet flag. There is no doubt that some reedlike plant in many respects similar if not identical with calamus was used by the ancient Egyptians in the preparation of incense as recorded in the papyri of Ebers. These Egyptian records date back to the eighteenth dynasty, or from 1800 to 2000 years B. C. Vague references to a similar plant are to be found in the ancient sacred writings of the Hindoos. It is likely that the plant referred to and that which is mentioned in the Bible is a species of Andropogon, and not Acorus. In Exodus, 30:23, we find: “Take thou also unto thee principal spices of pure myrrh, of sweet cinnamon, and of sweet Calamus.” Our first reliable information of Calamus is from Plinius, who received specimens from the country about the Black Sea and who described it under the name of Acorus calamus. Acorus, derived from the Greek a for, and corus, the eye, because the plant was highly recommended in the treatment of diseases of the eye. Calamus, also derived from the Greek, means a reed or reed-like plant. Dioscorides and Theophrastus also describe the plant with special reference to the rhizome and its uses. The rhizomes should be collected late in the autumn, carefully cleaned of dirt, leaf remnants, leaf scales and roots and dried in the sun or in an oven at a moderate temperature. The aromatic odor increases greatly on drying. Calamus has ever been a favorite popular remedy. Its principal use seems to have been that of a tonic and blood purifier, for which purpose bits of the dried rhizomes are masticated and the saliva swallowed. It undoubtedly is a tonic and it also has a beneficial, stimulating and antiseptic effect upon gums and teeth. Chewing the rhizomes is also said to clear the voice. Calamus is, or has been, used in flavoring beer and gin. Country, people add it to whisky, wine and brandy to make a tonic bitters for the weak and dyspeptic. It is said that the Turks employ it as a preventive against contagious diseases. In India it is used to destroy vermin, especially fleas. In England it is employed in the treatment of malaria.