56. _Obliteration of a portion of the Urethra, remedied by an operation._--M. VANIER of Cherbourgh, relates in the Jan. No. of "Le Propagateur des Sciences Medicales," the case of a man aged 27 years, who, on the 16th of June, 1815, was wounded in the penis by a musket ball, which completely divided the urethra at its middle portion, without injuring the corpora cavernosa. The wound healed up; but by degrees, the passage contracted, so that in May, 1819, the patient could pass his urine only guttatim, with pain and difficulty, and was threatened with inflammation, &c. of the perineum. Bougies afforded no relief. An incision was then made externally, in the direction of the urethra, so as to divide the cicatrix, and open the canal above and below the contracted part. The lips of the incision were drawn together over a sound, passed into the bladder; and by the 5th day, the wound was completely cicatrized. The sound was then removed, and a short bougie inserted, so as to pass beyond the cicatrix. This was worn occasionally, and the patient completely recovered. At the end of three years, he was able to "urinate with ease, and in a full stream." 57. _Artificial Joint cured by Caustic._--Dr. J. RHEA BARTON, has applied the caustic potash to the extremities of the fragments of a broken tibia, after an artificial joint had fully formed. Exfoliation was produced, followed by bony union. In three months, the patient recovered. Dr. B. alludes to other cases, by Mr. WHITE of Manchester, and Mr. HENRY CLINE, thus treated with success; to two instances, in which the practice failed in the hands of Mr. EARLE; and finally, to one case by Mr. A. COOPER, the result of which he has not learnt. He does not recommend the operation, as usually preferable to the _seton_, for which, the profession is indebted to Dr. PHYSICK; but as an additional expedient, when other means fail.--_Med. Record. April_, 1826. 58. _Epilepsy cured by Trephining._--In the 17th No. of the New-York Medical and Physical Journal, Dr. DAVID L. ROGERS relates an interesting case of a man, aged 46, who had been subject to epileptic convulsions for 14 years, and who, of late years, had been unable to labour, and rapidly sinking into a state of idiocy, from their frequent recurrence.