DOSAGE OF THE MAMMALIAN HEART BY CHLOROFORM 89 
[. 1,500 mgrms. CHC1, per Litre of Modified Ringer's Solution 
(CHCl 3 in "15 per cent, dilution) 
No. of Heart 
Quantity of 
CHCl^solution 
perfused 
Duration of 
flow 
A. beat 
V. beat 
Recovery 
Heart 32 : — 
Obs. 3 ... 
30 c.c. 
30 sees. 
Stopped in 19 sees, 
(after 25 beats) 
Stopped in 15 sees, 
(after 2 1 beats) 
Full. A. begins to beat 
in 75 sees. ; V. a few 
sees, later. 
Obs. 4 ... 
1 1 3 c.c. 
60 sees. 
Stopped within 
20 sees. 
Stopped finally 
Full in the case of A., 
beats commencing 111 
75 sees. ; V. shows 
only fibrillar contrac- 
tions 
Obs. s ... 
71 c.c. 
62 sees. 
do. 
Full in A. 
Obs. 6 ... 
190 c.c. 
2 mins. 
do. 
Fair in A. 
Obs. 7 ... 
240 c.c. 
3 mins. 
do. 
do. 
Obs. 8 ... 
5 mins. 
do. 
do. 
