"Aqueous remedies," says the dermatologist, "present themselves in the form of simple water in its various states of cold, tepid, warm, hot and steam; water impregnated with saline matter as in the sea-bath, and saline solutions; in lotions, fomentations and poultices. Water may be sedative, emollient, or stimulant, according to the manner in which it is employed. As a tepid bath or fomentation it is sedative, and its sedative action is increased by the addition of various substances, such as oatmeal, starch, gelatine, and soda in small quantities. It is emollient when used as a water dressing or in the condition of steam, and it is stimulant when cold or hot. When hot it is the best means known of relieving pruritus (itching), and in its cold state it refreshes and gives vigour to the skin; hence, the morning bath, the sea-bath, and daily ablutions with soap. On this principle it is that we advise daily cold ablutions with soap of the face in cases of acne (pimples), and to other parts of the body, particularly the _axilla_ and _perinaeum_ in chronic eczema or chronic pruritus. Aqueous lotions of _liquor plumbi_ (sugar of lead) are refrigerant and sedative, while lotions of carbolic acid, sulphurate of _potash, acetate_ of _ammonia_, and _bicarbonate_ of _ammonia_ are anti-pruritic. Warm fomentations are sedative and anodyne, and their properties are increased by the addition of poppy heads. Poultices are emollient and sedative, but their protracted use, as of all aqueous applications, macerates and weakens the skin, and tends _to perpetuate_ the disease or cause boils. As a rule, all aqueous applications except simple bathing, must be employed with great caution in skin diseases. Saponaceous ablutions generally aggravate eczematous affections; but certain forms and stages of that disease are benefitted by their use." As a means of using the hip bath, whether medicated or otherwise, and for female complaints and irregularities, there is nothing to equal the bidet herewith figured (Plate Nine). 3. FOMENTATIONS are simply local baths and are used to relieve pain and reduce inflammation, as in the poppy head or laudanum fomentation to painful swellings, or the turpentine fomentation to redden the chest in severe colds. The water must be very hot, and two pieces of flannel must be used, wrung from the water, time about. These may be sprinkled with laudanum or turpentine as the case may demand. 4. THE MUSTARD FOOT-BATH is useful in cases of incipient colds, headaches, or languor and listlessness with restless nights. A bucketful of hot water with a handful of mustard in it is all that is wanted; in this the legs are to be bathed for twenty minutes before going to bed. 5. THE OAK BATH is made by adding a pound of bruised oak bark to a quart of cold water and boiling for half an hour; the half of this maybe put in the morning tub as a tonic bath.