During the past year we have limited our work chiefly to intrathoracic esophageal operations. Our aim has been to develop the technic of an operation for each of the following purposes:
1. For circuiting the cardia by the establishment of an anastomosis between the stomach and esophagus.
2. For resection of a portion of both the stomach and esophagus.
We have used two methods of artificial respiration; the one by an inflation of the lungs through an intubation tube; the other by a positive pressure cabinet, similar to that devised by F. T. Murphy and Brauer, in which tlie head of the dog has been placed.
Each method has had definite advantages. The intubation method has demonstrated two important facts:
1. An artificial apnea is developed which abolishes all muscular effort at respiration during operation.
2. The range of ether-administration is greater and the danger of death from too