388 SIR THOMAS R. FRASER AND MR ALISTER T. MACKENZIE ON 



Experiment LVIII. — continued. 





Contractions 



in 10 seconds. 





Interval. 







Notes. 









Auricles. 



Ventricle. 





After Strophanthus. 









8 minutes . 



7 



7 



Contractions regular and powerful ; in systole the ventricle 

 becomes smaller and paler than at first; in diastole the 

 ventricular movement seems larger. 



17 „ . . 



7 



7 



As last noted, ventricular movement in diastole is distinctly 

 greater ; the auricles contract well. 



25 „ . . 



7 



7 



Contractions regular and powerful ; ventricular systole 

 occupies two-thirds of the cycle : ventricular diastole is abrupt. 



40 „ 



7 



7 



Ventricular diastole begins before auricular systole. 



41 „ 



8 



4 



Two contractions of the auricles precede each ventricular 

 contraction. 



43 „ 



7 



7 



As after 40 minutes. 



46 „ . . 



4 



4 



Ventricular diastole now occupies two-thirds of the cycle ; 

 the ventricle seems less small in systole ; auricular systole 

 accompanies the second third of ventricular diastole. 



55 „ 



4 



4 



As last noted. 



77 „ . . 



4 



4 



Do. 



95 „ 







Seven auricular and seven ventricular contractions in 20 

 seconds ; characters as last described. 



110 „ . . 



4 



4 



Regular and powerful contractions ; ventricular diastole 

 occupies three-fourths of the cycle, auricular systole corre- 

 sponds to the third fourth ; in systole the ventricle becomes 

 very small and pale ; in diastole its movement is large. 



125 „ 



4 



4 



As last described. 



3 hours 45 mins. 



4 



4 



Contractions regular and powerful ; ventricular diastole 

 occupies one-half of the cycle ; ventricular movements are 

 large. 



15 hours 



6 



3 



Contractions are powerful ; the ventricular movements, 

 systolic and diastolic, are large ; two auricular contractions 

 precede each ventricular one. 



22 







The auricles are contracting ; the ventricle is arrested and 

 semi-contracted ; on section the ventricular muscle is acid in 

 reaction. 



Experiment LIX. — , 000025 gram of sulphate of atropine, followed by , 0004 gram 

 of extract of & sarmentosus (Rana temporaria). 



Interval. 



Contractions in 10 seconds. 



Notes. 



Auricles, 



Ventricle. 



Before Strophanthus. 

 10 minutes . 



7 „ . . 

 5 „ . . 



4 „ . . 



8 



8 



8 



8 

 8 



8 



Contractions regular and powerful; ventricular systole 



occupies two-thirds of the cycle. 

 As last noted. 

 000025 gram of atropine sulphate in Ringer's solution 



inserted within the pericardial sac. 

 Ventricular diastole is not so large. 

 00004 gram of extract of Strophanthus in Ringer's solution 



inserted within the pericardial sac. 



