From a report of a recent meeting of the London Medical Society, it appears that a new anaesthetic material has just been discovered, but whether it is superior to chloro-iorm or other agents remains to be ascertained. It consists of the common puff-ball, an indigenous fungus in this country, and was detected by a Mr. Richardson, whose attraction was called to it by the fact that in some localities it is a common practice to stupify bees with it before extracting the contents of the hive. The mode of administration is to burn it while in a dried state, and to cause its fumes to be inhaled.