Some loose analogies, which have hardly the shadow of plausibility are much relied upon by Homœopathists in advocating the efficacy of their medicines. In relation to the ridicule which has been cast upon _the little doses_, Dr. Hering says, “suppose _electricity_ had at its first disclosure been sneeringly called _the little tempest_, how ridiculous might it have appeared to those persons who were incapable of comprehending its minuteness or its might.” And the minute division of matter, as, for example, in the making of gold leaf and in the diffusion of odors, is often alluded to by Homœopathists, as illustrating the power of the little doses. When they will prove that a little electricity will produce a greater effect than a large amount of it, that a decillionth of a grain of gold will make a stronger leaf than a whole grain with the same extent of surface, or that a decillionth of a grain of musk can be made to give out a more powerful odor than any ‘allopathic’ quantity of it: then I will not only grant that the analogies are good ones, and that they go to show that Homœopathy is probably true; but I will also engage to prove, that a tack-hammer can give a stronger blow than a sledge, that smallness is always the emblem of might, that a man will be better nourished by Homœopathic doses of food than by the usual allopathic ones, and any other ridiculous thing of a kindred character. Having thus noticed the two great principles of Hahneman’s system, let us now see on what kind of observation or experience these principles rest. If the experience be satisfactory in its amount and character, then, however opposed these principles are to the ideas and doctrines current among physicians, we must admit them to be true. It is to _facts_ that I appeal—_numerous_, _well observed_, _well attested_, _comparable_ _facts_. Nothing else can settle this question. If the decillionth of a grain of strychnine, or mercury, or charcoal, or salt, or oystershell, does produce palpable and measurable effects upon the human system, lasting twenty, thirty, forty, or fifty days, and does thus cure disease, as Homœopathists assert, let it be proved by _facts_.