Hahnemann did not generally approve of the external use of medicines, and the British Homoeopathic Society does not wish to commit itself as a body to their recommendation; since, however, many of their members and colleagues are daily in the habit of employing them, and since, moreover, it is still a moot question whether medicine should or should not be applied locally, it has been considered advisable to furnish the chemists with the best formulae for making such preparations, as the demand for them is well known to be considerable.* No attempt will be made to enumerate all the various medicines which have been used locally; all that is necessary is to give approved recipes for the following general forms, which can then be medicated by any remedy desired, and a description of the substances used in their preparation. These general forms are, Glyceroles, Ointments, Liniments, Lotions, Opodeldocs, and Injections.

* N.B. - In these remarks it is not to be understood that Hahnemann and his followers consider local applications, per se, to be of questionable utility, but the point at issue is, how far the homoeopathic medicines act when thus applied, and how far the benefit is traceable to the menstruum and the manner of the application. For example, in rubbing in an opodeldoc or liniment containing a certain amount of a homoeopathic medicine, it is difficult to apportion the benefit between the medicine and the friction. In using a medicated ointment the unctuous matter may have much to do with the result, while if a lotion is used it may benefit the case either by cooling if spirituous, or by acting after the manner of a wet compress if its moisture is mechanically retained.