This operation is performed by running two or three, or more needles into the flesh, where they are allowed to remain for a certain time. Considerable benefit has been derived from its use in some cases of rheumatism. In one case in which it was employed the surgeon having inserted the needles, went away to see some other patients, and forgot all about the poor fellow with the needles in his back. When he returned, some three or four hours after-wards, he found his patient cured, but the needles were so rusted in the flesh, that he had some difficulty in removing them.