DOSAGE OF THE MAMMALIAN HEART BY CHLOROFORM 
101 
XII. IO MGRMS. CHClj PER LlTRE OF MODIFIED RlNGER's SOLUTION 
(CHC/j in *ooi per cent, dilution; or i in 150,000 by vol.) 
No. of Heart 
Quantity of 
CHC1., solution 
perfused 
Duration of 
flow 
A. beat reduced by 
V. beat reduced by 
Recovery 
II;art 39 : — 
Obs. 1 ... 
190 C.C. 
1 min. 
5 5 sees. 
40 per cent. 
I 1 per cent. 
Full 
Obs. 2 
I 7o C.C. 
1 111 1 n . 
47 sees. 
*F5'5 P cr cent. 
1 7 per cent. 
do. 
Obs 1 
265 C.C. 
3 111 m s . 
47 per cent. 
1 7 per cent. 
do. 
Obs. 4 
I go C.C. 
2 nuns. 
44' 5 per cent. 
2 3 per cent. 
do. 
O-s. 5 ... 
■?6c cc. 
3 m m s . 
5 5 sees. 
27 per cent. 
28'8 per cent. 
do. 
Heart 40 : — 
Obs. 1 ... 
100 C.C. 
2 mins. 
77 per cent. 
29 per cent. 
do. 
Obs. 2 ... 
1 1 5 C.C. 
2 111 ins. 
3 sees. 
45 per cent. 
24 per cent. 
do. 
Obs. 3 ... 
IOO C.C. 
2 mins. 
58 per cent. 
24 per cent. 
do. 
Obs. 4 ... 
1 80 C.C. 
3 mins. 
57 per cent. 
2 3 per cent. 
do. 
Obs. 5 ... 
230 C.C. 
3 mins. 
10 sees. 
40 per cent. 
20 per cent. 
do. 
Average reduction in 10 obs. : A., 48" I per cent. ; V., 21 '67 per cent. 
