Again, a general oozing may often appear a few hours after the operation, when the patient is warm in bed, apparently from the substance of the prostate. If raising the breech and the application of cold fail to arrest it, it may be necessary to plug the wound. This is done by stuffing it with long strips of lint round the tube. Great care must be then taken lest the tube become occluded. 3. Infiltration of urine may occur as a result of a too free incision of the vesical fascia (in adults), and still more frequently of a too small external wound. Here it should be noticed that in children it is fortunately of very little consequence to preserve the integrity of the prostatic sheath of vesical fascia. In them the prostate is so exceedingly small and undeveloped, that even the forefinger could not be introduced into the bladder without a complete section of the prostate. Probably from the blander nature of their urine, and the greater vitality of their tissues, this is of less consequence, as it is rarely found that any bad effects result from this section. Among other risks we find peritonitis, inflammation of neck of bladder, inflammation of prostatic plexus of veins, resulting in pyæmia, suppression of urine, and other kidney complications. For the symptoms and treatment of these there is no place in a mere manual of surgical operations. _Wound of rectum and recto-vesical fistula._--Such wounds were not uncommon, and in many cases unavoidable, before the days of chloroform, from the struggles of the patient; now they are comparatively rare, and should be still rarer. They probably occur in more cases than the surgeon is aware of, and heal up without his knowledge; we may arrive at this conclusion from the fact that small wounds are found in _post-mortem_ examinations of cases in which no such complication has been thought of. They occasionally heal without giving any trouble, but, at other times, as the external wound contracts, a communication forms between rectum and the urethra, in which the contents are apt to be interchanged in a most disagreeable manner, flatus passing per urethram, and urine per rectum. When it is evidently not going to heal spontaneously, the septum between the external orifice of the wound and the communication with the gut should be laid open, as in the operation for fistula _in ano_. There are certain modifications and varieties in the method of operating for stone through the perineum, which deserve at least a brief notice:-- 1. _The bilateral operation._--Though he was not the inventor, Dupuytren's name is justly associated with this operation. The principle of it is to divide both sides of the prostate equally, so as to give more room for extraction of a large stone, without the necessity of much laceration, or the risk of cutting through the prostatic sheath of fascia.