_Mouth, Ulceration of._ Try first Sulphate of Copper (112) or Lime Juice (231); if these fail use some of the other remedies mentioned in Art. _Gums, Ulceration and Sponginess of_. _For Aphthous Ulcerations, i.e., small white specks or ulcers in the mouths of infants and young children_, apply Borax (55*), or Alum (29), or Sulphate of Copper (112); Country Sarsaparilla (163) may at the same time be advantageously given internally. _In severer forms_ (_Ulcerative Stomatitis_), try Alum (29). _Mumps._ Beyond a dose of Castor Oil (83) or Infusion of Senna (336), so as to keep the bowels gently open, little is required beyond keeping the swollen parts covered with a piece of flannel, to protect them from cold draughts of air, and the use of a farinaceous diet for a few days. Should there be much pain, Opium Liniment (291) may be smeared over the surface of the swollen gland at bedtime. Should there be much fever, heat of skin, &c., a few doses of solution of Nitre (264) may be given. _Muscles, Pains in._ Give Sal Ammoniac (327) internally, and use Liniments containing Camphor (68), Lemon Grass Oil (217), Opium (291), or Turpentine (366) externally. _Mosquito Bites, to relieve the irritation_, try Lime Juice (235), or Vinegar (380). _Nettle-rash, to allay irritation_, apply Borax Lotion (57). _Neuralgia._ Try Sal Ammoniac (326), or when the pain returns periodically, Sulphate of Iron (177), or better still Cinchona Febrifuge (402*). When Neuralgia of the Head or Face (_Tic Douloureux_) recurs at stated periods, and is apparently of malarious origin, no remedy is equal to Quinine, which may be given in one large dose (ten grains) shortly before the time when the pain is expected to return. Should it not yield after three or four doses, no advantage will be gained by continuing it. Another plan is to give it in three-grain doses in a glass of wine thrice daily between the paroxyms of pain. Some obstinate cases which resist these and other remedies yield to a course of Fish Liver Oil (141). Among external applications are Datura Liniment or Poultices (130), Lemon Grass Oil (217), Mustard Poultices (253), and the Camphorated Opium (291), or Turpentine Liniment (366). _Nipples, sore or cracked_, are benefited by Borax Lotion (56), or Castor Oil (84), or Lime Water (225), locally applied. As a preventive use Infusion of Catechu (90). [To ensure prevention, the nipple should be carefully washed and dried immediately the child is removed from the breast, and the tissues may be hardened by washing them for a short time before delivery, and after each application to the breast, with a little brandy and water. It is also a useful practice to wear over the nipple a metallic shield, which should be constantly applied when the child is not at the breast.—_Prof. Ringer._] _Nodes, or Painful Swellings on the Shin-bone._ Apply Datura Poultice (130), or other means mentioned in _Tumours, painful_.