The same technique was employed as in the series previously reported. Stovain was the analgesic used in 91 of these cases and novocaine in 9 cases. There was no case of . failure in entering the dural sac, and in no case did the injected fluid fail to act. In three cases a second injection was given, as after the first injection the analgesia did not extend high enough for the perfor~ance of the operation. In two cases when novocaine was injected, the analgesia did not last long enough, and the

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... operations were completed under light general anresthesia. My limited use of novocaine has not created an impression in its favour in comparison with stovain or tropococaine. The dose required is almost double that of stovain, and the analgesic effect does not appear to be so deep or lasting. The bye:effects in these cases were mostly trivial. During the operation, there was faintness or nausea in 16 cases. In these 16 cases the analgesia reached to above the nipple line. In 12 cases the patient vomited on returning to the ward. Two cases suffered from severe headache, for which a hypnotic was admiriistered. In 45 cases, slight headache was reported to be present on the evening following the operation, but this headache did not interfere with the patient's sleep during the night.