96 THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
VII. 38 mgrms. CHC1 3 per Litre of Modified Ringer's Solution 
(CHC/ 3 in -0038 per cent, dilution) ' 
No. of Heart 
Quantity of 
CHC1 3 solution 
perfused 
Duration of 
flow 
A. beat reduced by 
V. beat reduced by 
Recovery 
Heart 7 : — 
Obs. 1 ... 
103 C.C. 
I min. 
3 5 sees. 
30 per cent. 
Practically stopped 
Full 
Obs. 2 ... 
20 C.C. 
27 sees. 
30 per cent. 
80 per cent. 
do. 
Obs. 3 
i 27 C.C. 
2 mins. 
1 8 sees. 
7 5 per cent. 
Stopped 
do. 
Obs. 4 ... 
125 C.C. 
2 mins. 
1 3 sees. 
70 per cent. 
do. 
do. 
Obs. 5 ... 
4^.0 C.C. 
9 mins. 
50 sees. 
69 per cent. 
Stopped, but begins 
again before CHC1 3 
solution is oft 
do. 
Heart 19 
(irregular 
beats) : — 
Obs. 1 ... 
I 80 C.C. 
2 mins. 
5 3 sees. 
Over 70 per cent. 
Over 70 per cent. 
do. 
Obs. 2 ... 
184 C.C. 
3 mins. 
5 sees. 
do. 
do. 
do. 
Obs. 3 ... 
173 C.C. 
3 mins. 
do. 
do. 
do. 
Average reduction, Heart 7, 5 °t> s - : A., 55 per cent. ; V., 96 per cent. 
