PLATE 3 
EXPLANATION OF FIGURES 
5 External bundles seen on the anterior surface of the human heart. The 
visceral pericardium and coronary vessels have been removed. The atria are in 
a distended or diastolic condition. 
6 External bundles seen on the posterior surface of the human heart. The 
visceral pericardium and coronary vessels have been removed. The atria are in 
a distended or diastolic condition. 
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