I counted up in the Repertory, twenty-four kinds of toothache, in addition to a great variety of other sensations in the gums, the teeth and the roots of the teeth. Besides, there are fifty-five conditions under which toothache appears, resulting from different agents. Some of these are a little singular. Thus Rhododendron is apt to produce toothache in a thunderstorm, and therefore, according to Homœopathic reasoning, is the appropriate remedy for toothache which is particularly disposed to come on in a thunderstorm—a disposition of toothache of which I never heard before. The remedy for toothache which comes on when riding in a vehicle is sepia—no remedy is mentioned for it when it comes on when riding horseback, or going on foot. Homœopathic researches have not extended as yet to these points. Pulsatilla is the remedy for toothache in the _spring_, but there is no remedy especially for it in summer, autumn, and winter. Such gaps in Homœopathic experience ought certainly to be filled up. The varieties of toothache are rendered still more numerous by the symptoms with which it is connected. I counted eighteen of these. Among them are coldness of the ears, twitching of the feet and fingers, and a necessity to run about. An aversion to different things is produced by different remedies. Thus colchicum causes an aversion to pork—zinc to veal and fish—selenium to salt food—hellebore to sour crout—arnica to broth—assafœtida to beer—sabadilla to wine[16]—belladonna to vegetables—sulphur to washing one’s self—tartarized antimony to tobacco smoking—spigelia to tobacco-snuffing, &c. Nothing is mentioned as causing an aversion to tobacco _chewing_. Some Homœopathists had better extend the line of discovery in that direction. Jahr has some singular grouping of symptoms. Under the effects of colchicum we have “mental exertion, touch, bright light, smell of pork, and improper behavior of others, exacerbates the case excessively.” In relation to the pork, he does not say whether it is cooked or uncooked—there is certainly a failure in the nicety of his discrimination here. These Homœopathists sometimes make wonderful discoveries. In the notice of the effects of stramonium, I find this. “Air passes out of the ears.” Does stramonium, I would ask Mr. Jahr, or his translator, Mr. Hering, set up the manufacture of air in the ears, or does it punch a hole through the drum of the ear, and thus let the patient blow air from his mouth through the ears? Our allopathic mind cannot divine how air can come from the ears except in one or the other of these two ways.