FOXGLOVE (_Digitalis purpurea_) slows the action of the heart, lowers the temperature, and acts indirectly as a diuretic. It is especially valuable in the treatment of scarlet fever and in dropsy. _Dose_--Of infusion, one-half drachm to one-half ounce; of the fluid extract or strong tincture, from two to ten drops. It should be used with caution. A poultice made of the leaves and placed over the kidneys is an effectual method of employing the drug. QUEEN OF THE MEADOW (_Eupatorium Purpureum_), is also known as Gravel-weed, Gravel-root, or Trumpet-weed. This is a most valuable diuretic. _Dose_--Of the infusion, one to three ounces; of fluid extract, one-fourth to one-half teaspoonful; of the concentrated principle, Eupatorin (_Purpu_), one-half to two grains. BUCHU (_Barosma Crenata_). The leaves are used. This agent has been extensively employed, generally in compounds. _Dose_--Of infusion, (steeped for two hours or more) one to two ounces; of fluid extract, the same; of the concentrated principle, Barosmin, one to three grains. PIPSISSEWA (_Chimaphila Umbellata_), or Prince's Pine. This is a tonic to the kidneys, as well as a diuretic and alterative, and is a mild, but very efficient remedy. _Dose_--Of decoction, one ounce from four to six times a day; of fluid extract, one-fourth to one-half teaspoonful; of the concentrated principle, Chimaphilin, one to two grains. WATER-MELON SEEDS (_Cucurbita Citrullus_). _Dose_--Of infusion, the patient may drink freely until the desired effect is secured. PUMPKIN SEEDS (_Cucurbita Pepo_). They are mild, unirritating, yet effective diuretics. An infusion of these may be drunk freely. SWEET SPIRIT OF NITRE (_Spiritus Ætheris Nitros_), is diuretic and anodyne. _Dose_--One-fourth to one-half teaspoonful, diluted in water, every two or three hours. SALTPETRE (_Potassæ Nitras_). _Dose_--Powdered, five to ten grains. ACETATE OF POTASH (_Potassæ Acetas_). _Dose_--Ten to fifteen grains, largely diluted in water. It is more frequently used for this purpose than the nitrate. It is a most valuable diuretic. EMETICS. These are medicines which cause vomiting and evacuation of the stomach. Some of the agents of this class, termed irritant emetics, produce vomiting by a local action on the stomach, and do not affect this organ when introduced elsewhere. Others, which may be termed systemic emetics, produce their effects through the nervous system, and, therefore, must be absorbed into the circulation before they can produce vomiting. In cases of poisoning, it is desirable to empty the stomach as quickly as possible, hence irritant emetics should be employed, for they act more speedily. Draughts of warm water favor the action of emetics. MUSTARD (_Sinapis_) acts promptly and efficiently as an emetic, and may be employed in poisoning. _Dose_--From one to two teaspoonfuls of powdered mustard, stirred up in a glass of tepid water. It should be quickly swallowed and diluents freely administered.