A few days ago, we were called to see a horse, said to have swelling on the _tarsus_, (hock.) On an examination, it proved to be an abscess, well developed; the matter could be distinctly felt at the most prominent part. We should certainly have been justified (at least in the eyes of the medical world; and then it would have looked so "doctor-like"!) in displaying a case of instruments and opening the tumor. If ulceration, gangrene, &c., set in and the horse ultimately became lame, no blame could be attached to us, because the practice is _scientific_!--recognized by the schools as good and efficient treatment. What was to be done? Why, it was evident that we could not do better than to aid nature. A relaxing, anti-spasmodic poultice was confined to the parts, and in six hours after, the sac discharged its contents, and with it a piece of splinter two inches in length. The pain immediately ceased, and the animal is now free from lameness. We here see the design of nature: the consequent inflammation was to produce suppuration, and make an outlet for the splinter. Professor Kost says, "The laws of all organic life are remarkably peculiar; they possess, in an eminent degree, the power of self-regulation. When interrupted, disease, indeed, supervenes; but unless the circumstances are particularly unfavorable, the physiological state will soon be restored. All observation most clearly corroborates this fact. The healing of wounds, restoration of fractured bones, expulsion of obtruded substances, and particularly the manner in which extravasated matter or pus is removed from internal organs, as in case of abscess in the liver, in which exit may be gained by ulceration through the parietes, or by an adhesion to and ulceration into the intestines, or even by the adhesions to the diaphragm and lungs, in such a manner as, by ulceration into the bronchia, a passage may be gained, and the pus thus removed by expectoration,--all evince a most singular conservative power. What is most remarkable in cases like the latter, is, that the adhesions are so formed as to prevent the escape of the pus into the peritoneal sac, which accident must inevitably prove fatal. "Some very interesting experiments have been performed to test the restorative power of the different tissues of the animal body. If a portion of the intestines of a dog be taken out, and tied, so as to obstruct completely the passage, it will be found that the adjacent portions of the intestine will reunite, the ligature will separate into the canal and be discharged, and the gut will heal up so as to preserve its normal continuity, and the animal, in a fortnight, will have recovered entirely from the effects of this fearful operation.