That nearly if not all medicines, may be applied externally with advantage, when there are local manifestations similar to those produced by the drugs, there can be no doubt in the mind of any sensible man. That they will act favorably when so used is _reasonable_, as a matter of theory, and that they do, as a matter of fact, has been _proven_ to my mind, by abundant experience in their use. Therefore, I hesitate not to recommend the practice to others. Medicines must act either by combination with the affected part, or by _Catalysis_, changing the molecular action of the living tissues. In either case, they must come directly in contact with the part to be affected. This _must_ be done through the circulation, when taken internally, or it _may_ be done by direct application of the remedy to the diseased tissue, when that is so situated as to be reached. The difference is greatly in favor of the latter mode when that is practicable, from the greater certainty of its results. This assertion is based, not upon vague hypothesis, but upon _actual practice_. Entertaining these views, however heretical they may be pronounced, I shall proceed to mention some of the remedies I have learned to use thus, and the cases for which they are prescribed. I would remark that, in selecting a remedy, it must be done with as much certainty of its homoeopathic relation to the local or general symptoms for external as for internal use. I have found, however, that much lower attenuations are requisite and admissible. ARNICA is highly applicable to _bruises_, and is valuable also when applied to lacerated or mangled surfaces, to the surface of the limb where a bone is fractured, also about the joint when it has been dislocated. It is to be used in the form of _Arnicated water_, by putting one or two drops to a gill of water for application where the skin is ruptured or the surface raw, and ten to twenty drops to the gill, upon parts where the skin is sound. It is useful also, for _boils_, and _carbuncles_ in the _early stage_, the _strong tincture_ to be applied when the surface is sound, and (to boils) when the surface is open, one drop to a gill of water. Aconite Is applicable to inflamed eyes, in the early stage, where the disease is in the conjunctiva, (that portion which lines the lids and covers the front of the ball), especially if there is a sense of scratching, as though some foreign substance is in the eye, great intolerance of light, chilly sensations, with more or less fever, and quick pulse. Put three or four drops to a gill of warm water, and apply it freely. It is also very valuable for _Neuralgia_, applied strong and warm, along the course, or at the origin of the affected nerve. In neuralgia of the face, apply it upon the side of the face, also just behind and below the ear of the affected side.