The oil is less used than that of Peppermint. From two to five drops may be given on sugar; or from half to one teaspoonful of the spirit of Spearmint with two tablespoonfuls of water. Also a distilled water of Spearmint is made, which will relieve hiccough, and flatulence, as well as the giddiness of indigestion. The tincture prepared from the dried herb looks of a bright dark green by day, but of a deep red colour by night. Martial called the Spearmint _Rutctatrix mentha_. "_Nec deest ructatrix mentha_." The Calamint, or Basil Thyme, grows frequently in [344] our waysides and hedges, a labiate plant, with downy stems and leaves, whilst bearing light purple flowers. The whole herb has a sweet, aromatic odour, and makes a pleasant cordial tea. It is named from the Greek kalos, "excellent," because thought useful against serpents; "There is made hereof," said Galen, "An antidote marvellous good for young women that want their courses." The stem of this pretty slender herb is seldom more than five or six inches high, and its blossoms are so inconspicuous as to be often overlooked. The flowers droop gracefully before expansion. In country places it is often called Mill Mountain, and its infusion is an old remedy for rheumatism. If bruised, and applied externally, it reddens the skin, and will sometimes even blister it. In this way it acts well when judiciously used for lumbago, and rheumatic pains. The Calamint contains a camphoraceous, volatile, stimulating oil, in common with the other mints; this is distilled by water, but its virtues are better extracted by rectified spirit. The lesser Calamint is a variety of the herb possessing almost superior virtues, with a stronger odour resembling that of Pennyroyal. "Apple Mint" is the "_Mentha rotundifolia_."