applied, with water at the strength of thirty drops of the _tr._ to a gill, to parts affected with _Rheumatism_, acts very beneficially. It is also a most valuable application at half the above strength upon parts affected with Erysipelas, when the surface is swollen, and there are vessicles filled with fluid like a blister in burns. It is also useful for sores that exist as the chronic effects of burns when the proper treatment had not been used in the beginning, and the healing process was never perfected. _Rhus Cerate_ is a very useful application to irritable ulcers. Hepar Sulphur is a specific for _Itch and Scald Head,_ applied in form of a wash with twenty to thirty drops of _tr. Hepar Sul._ to a gill of water. Also for ill-conditioned scrofulous ulcers, generally. Cuprum Aceticum. (_Acetate of Copper Verdigris_) applied to _Cancerous_ ulcers of the face, _Lupus_ or _Noli-me-tangere_, in the early stage, will in most cases effect a perfect cure, especially if for a week previously the part has been wet daily with _tr. Thuja_. The best mode of applying the _acetate_ is to mix the impalpable powder, as prepared for paint, with some substance to form a cerate, as equal parts of bees-wax and mutton suet, with 1-50 to 1-100 part of the pure _acetate_ as found in the bottom of the can, when prepared in oil for paint; heat all together and stir until cool. This forms a good plaster for covering and shielding the sore while its medicinal property is in the _Cuprum Aceticum_ diluted as above. It is quite useful for any ill conditioned ulcer. Acetic Acid is a most efficient remedy applied to old irritable _varicose ulcers_ on the limbs of females who have suffered from _Phlegmasia Dolens_, (milk leg.) It may be applied as a wash to the part once or twice a day at the strength of 1-20th of the acid with water, or in the form of good cider vinegar. The manufactured vinegar of the cities does _not_ usually contain acetic acid. ARUM TRIPHYLLUM is a specific to allay the inflammation and excessive pain in _scrofulous swellings_ of the neck, (_Kings Evil_.) The pure drug in powder, wet with warm water, or the green root bruised so as to form a poultice, is to be applied over the swelling. It soon discusses the swelling, or if pus has already formed, allays the the pain, and brings the pus to the surface, and if continued, disposes it to heal rapidly. BAPTISIA TINCTORIA applied as a poultice either in the powdered drug, or with some other substance wet with the infusion or _tr._, _arrests gangrene_ in a short time. It is especially useful for threatened or actual gangrene arising from _lacerated_ wounds or scalds with wounds, as in accidents connected with the explosion of steam boilers; when we often have scalds and lacerations in the same wound. HYDRASTUS CANADENSIS used as a gargler in a putrid state of the throat in malignant _Scarlet fever_, arrests the destructive process _at once_.