PERFUSION OF THE MAMMALIAN HEART. 207 



A f 



FIG. 63. Apparatus for perfusion of the mammalian (rabbit) heart. The apparatus con- 

 nected with the heating device is that of Brodie. Apparatus of Gunn is shown in insert. 



and these are cut from below upwards, care being taken to keep the blade away 

 from the heart and lungs. The cartilages are similarly cut on the other side of the 

 sternum. The isolated piece of sternum is bent upwards and cut across at the 

 upper end. The exposed pericardium is picked up with a forceps and opened with 



