DOSAGE OF THE MAMMALIAN HEART BY CHLOROFORM 
VI. 50 mgrms. CHCl, per Litre of Modified Ringer's Solution 
(CHCl^ in "005 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 5 : — 
Obs. 2 ... 
Obs. 3 ... 
\J Do . a. • • • 
Obs. 5 ... 
Obs. 6 ... 
? 
4.0 sees. 
50 per cent. 
Stopped 
Full 
1 1 0 c.c. 
2 mins. 
32 sees. 
73 per cent. 
0.0. 
do. 
5 2 c.c. 
1 m in. 
1 5 sees. 
J U UCI L L 1 1 L . 
UU, 
168 c.c. 
3 mins. 
1 2 sees. 
88 per cent. 
do. 
do. 
100 c.c. 
1 min. 
57 sees. 
75 per cent. 
do. 
do. 
neciit 0 : — 
Obs. 1 ... 
ioc c.c. 
3 mins. 
75 per cent. 
92 per cent. 
Heart 20 : — 
Obs. 2 ... 
163 c.c. 
2 mins. 
55 sees. 
29 per cent. 
39 per cent. 
Full 
Heart 2 1 : — 
Obs. 1 ... 
Obs. 2 ... 
Obs. 3 ... 
Obs. 4 ... 
Obs. 5 ... 
Obs. 6 ... 
167 c.c. 
3 mins. 
6-4 per cent. 
47 per cent. 
Full 
97 c - c - 
3 mins. 
5 sees. 
6 1 per cent. 
82 per cent. 
do. 
87 c.c. 
3 mins. 
75 per cent. 
83 per cent. 
do. 
81 c.c. 
3 mins. 
. 69 per cent. 
84 per cent. 
do. 
90 c.c. 
3 mins. 
87 per cent. 
85 per cent. 
do. 
93 c - c - 
3 mins. 
4. sees. 
89 per cent. 
77 per cent. 
do. 
Average reduction, Heart 5, 5 obs. : A., 71-2 per cent. ; V., 100 per cent 
,, „ „ 21, 6 obs, : A., 74 per cent. ; V., 76^3 per cent. 
Mean reduction in four hearts : A., 62-3 per cent. ; V., 76*8 per cent. 
