DOSAGE OF THE MAMMALIAN HEART BY CHLOROFORM 
VIII. 30 mgrms. CHC1 3 per Litre of Modified Ringer's Solution 
(CHC/j in -003 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 0 : — 
Obs. 1 ... 
92 C.C. 
2 mins. 
7 sees. 
63 per cent. 
9^ per cent. 
Full 
Obs. 2 ... 
I I I C.C. 
2 mins. 
3 5 sees. 
82 per cent. 
Stopped 
do. 
Obs. 3 ... 
200 C.C. 
3 mins. 
40 sees. 
70 per cent. 
do. 
do. 
Obs. 4. ... 
185 C.C. 
3 mins. 
5 sees. 
68 per cent. 
Practically stopped 
do. 
Obs. 5 ... 
75 cc. 
87 sees. 
60 per cent. 
92 per cent. 
do. 
Obs. 6 
5 5 c - c - 
45 sees. 
05 per cent. 
94 per cent. 
do. 
Obs. 7 ... 
2IO C.C. 
195 sees. 
66 per cent. 
9^ per cent. 
do. 
Obs. 8 ... 
450 C.C. 
9 mins. 
1 7 sees. 
62 per cent. 
Stopped 
do. 
Heart 27 : — 
Obs. 1 ... 
78 C.C. 
1 min. 
10 sees. 
5 3 per cent. 
69 per cent. 
do. 
Obs. 2 ... 
I IJO C.C. 
3 mins. 
50 per cent. 
83 per cent. 
do. 
Obs. 3 ... 
140 C.C. 
3 mins. 
69 per cent. 
89 per cent. 
do. 
Obs. 4 ... 
140 C.C. 
3 mins. 
57 per cent. 
82 per cent. 
do. 
Heart 28 : — 
Obs. 1 
135 C.C. 
3 mins. 
28 per cent. 
- 
2 5 per cent. > 
do, 
Obs. 2 ... 
1 20 C.C. 
3 mins. 
Not recorded 
36 per cent. > 
do. 
Obs. 3 ... 
170 C.C. 
5 mins. 
56 per cent. 
2 5 per cent. > 
do. 
Obs. 4 ... 
'55 c.c 
4 mins. 
57 per cent. 
40 per cent. > 
do. 
o 
