ioo THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
XI. 15 mgrms. CHC1 3 per Litre of Modified Ringer's Solution 
(CHC/^ in -0015 per cent, dilution) 
No. of Heart 
Quantity of 
CHC1., solution 
perfused 
Duration of 
flow 
A. beat reduced by 
V. beat reduced by 
Recovery 
Heart 9 : — 
Obs. 1 ... 
Obs. 2 ... 
Obs. 3 ... 
394- c - c - 
2 mins. 
30 sees. 
10 per cent. 
40 per cent. 
Full 
640 c.c. 
4 mins. 
40 sees. 
50 per cent. 
49 per cent. 
do. 
200 C.C. 
1 min. 
1 7 sees. 
43 per cent. 
37 per cent. 
do. 
Heart 1 5 : — 
Obs. 1 ... 
Obs. 5 ... 
810 C.C. 
I 1 mins. 
1 2 sees. 
5 10 c.c. 
6 mins. 
5 5 sees. 
20 per cent. 
40 per cent. > 
20 per cent. 
Full 
Heart 30 : — 
Obs. 1 ... 
Obs. 2 ... 
Obs. 3 ... 
320 c.c. 
3 mins. 
5 sees. 
] 8 per cent. 
26 per cent. 
do. 
80 c.c. 
1 min. 
10 sees. 
34 per cent. 
Not recorded 
do. 
92 c.c. 
I min. 
1 5 sees. 
39 per cent. 
do. 
do. 
Average reduction, Heart 9, 3 obs. : A., 34" 3 per cent. ; V., 42 per cent. 
„ „ „ 30, 3 obs. : A., 30-3 per cent. 
„ ,, „ 30, 1 obs. : V., 26 per cent. 
Mean reduction in three hearts : A., 28"2 per cent. ; V., 38*4 per cent. 
