The last contribution to the subject of cardicentesis, and the most complete, is a paper read by Dr. B. A. Watson, of Jersey City, at the last meeting of the American Surgical Association. The paper is all the more valuable from its containing the details of sixty experiments made on dogs, forty of the animals being injured and twenty uninjured at the time of the experiments. The experiments were made for the purpose of determining the possibility of arousing the heart into action, after its action had been stopped by chloroform narcosis, by the introduction of a needle into the organ. It will be remembered that the operation of cardicentesis was first proposed and performed by Dr. B. F. West-brook, of Brooklyn, in 1882, though previous to this time, the heart had several times been punctured unintentionally without bad results.
In all these experiments commercial chloroform was used. In the