I'l.ATK XCI. 



Fill. 233. Coats' apparatus. A, Kewrvolr; I;, stoproek ; C, tul:c l.-a.lin.u lYoin reMTVOlX t.. U, ri-iia cam 

 hifi'i-iiif ; !>', aorta, the cannula in which is in communication with the manometer; F, tube guarded by- 

 el ip, by which proximal end of manometer is closed; <;. style, which records the movements of the distal 

 column of the manometer on the cylinder; H, heart; K, ligature, by which the tube is secured to the 

 distended ccsophagus ; L, holder, by which the glass rod J is supported ( 63). , 



