Thirteen thousand successful administrations of nitrous oxid and oxygen by one anesthetist covering a period of nine years for practically every kind of an operation to its completion, under varying degrees of hazard, and varying in time from a few minutes to three hours, furnishes sufficient data, it seems to me, to establish to some degree, at least, the efficiency of nitrous oxid with oxygen as an anesthetic.
I realize that this declaration makes it necessary for me to provide the proof, which I am prepared to do, although, for the lack of time, it will be out of the question to review very many of the interesting cases. It will be competent, however, to select for illustration a few cases, which seem to me to substantiate my statement. If any one cares for further proof than will be set forth in this paper, the thousands of