90 



Chapter VI 



maximal increase of pressure in the beat and N the frequency, 



Q 



is a constant quantity. 



Isometric curves from left ventricle of a surviving cat's heart 



during a 2 hours' research. 



Time in seconds. 



A quarter of an hour after commencement of circulation with Locke's solution. 



Half an hour ditto. 



One hour ditto. 



One and a quarter hours ditto. 

 Commencement of rise in pressure. 



2 hours ditto. 



FIG. 53. 



