THE PHYSIOLOGY OF THE HEART 



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Fios. 45A AND 45s. .4, OUTLINE (THREE-QUARTERS NATURAL SIZE) TO SCALE OF 

 THE RIGHT SURFACE OF A DOG'S HEART, GIVING TIME-READINGS OF INTRINSIC 

 DEFLECTIONS OF THE STRING GALVANOMETER TAKEN AT A NUMBER OF POINTS. 

 B, DITTO OF LEFT SURFACE. (Lewis and Rothschild.) 



