480 



Drs. T. L. Brunton and T. Cash. 



more on cooling a heart which has at a certain temperature, E l5 shown 

 a refractory period, we may find this converted into a period during 

 which stimulation causes an omission of the following beat, E 2 . 



The duration of the diastolic pause is markedly influenced by tem- 

 perature, whereas it appears to be but slightly affected by variation 

 in the instant of stimulation by which it is produced. 



