DOSAGE OF THE MAMMALIAN HEART BY CHLOROFORM 
XV. 50 mgrms. CHC1, pfr Litre of Locke's Fluid 
(CHC/ } 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. 1 ... 
? 
i mins. 
2 2 SCCS 
50 per cent. 
39 per cent. 
Full 
Obs. 2 ... 
2 min. 
35 sees. 
70 per cent. 
42 per cent. 
do. 
Obs. 4 ... 
65 C.C. 
1 mins. 
45 sees. 
80 per cent. 
63 per cent. 
do. 
Obs. 6 ... 
3 10 c.c. 
I 7 mins. 
? 
5 2 per cent. ^ 
40 per cent. 
do. 
Average reduction, A. beat, 3 observations, 66"6 per cent. 
„ „ V. beat, 4 observations, 49 per cent. 
XVI. 38 mgrms. CHC1 5 per Litre of Locke's Fluid 
(C//C/ ? in -0038 per cent, dilution) 
No. of Heart 
Quantity of 
CHCl s solution 
perfused 
Duration of 
flow 
A. beat reduced by 
V. beat reduced by 
Recovery 
Heart 53 : — 
Obs. 1 ... 
? 
I min. 
42 per cent. 
44 per cent. 
Full 
Obs. 2 ... 
80 c.c. 
2 mins. 
1 5 sees. 
42 per cent. 
44 per cent. 
do. 
Obs. 3 ... 
161 c.c. 
5 mins. 
10 sees. 
45 per cent. 
45 per cent. 
do. 
Obs. 4 ... 
r I min. 
40 sees. 
52 per cent. 
45 per cent. 
do. 
Heart 54 : — 
Obs. 1 ... 
41 c.c. 
1 min. 
30 sees. 
75 per cent. 
56 per cent. 
Full 
Obs. 2 ... 
50 c.c. 
1 min. 
58 sees. 
78 per cent. 
59 per cent. 
do. 
Obs. 3 ... 
89 c.c. 
79 per cent. 
48 per cent. 
do. 
Obs. 5 ... 
90 c.c. 
3 mins. 
50 per cent. 
45 per cent. 
do. 
Obs. 6 ... 
73 c.c. 
3 mins. 
5 2 per cent. 
45 per cent. 
do. 
Obs. 7 ... 
1 1 5 c.c. 
5 mins. 
47 per cent. 
40 per cent. 
do. 
Average reduction, Heart 53, 4 obs. : A., 4525 per cent. ; V., 44-5 per cent. 
„ „ Heart 54, 6 obs. : A., 63-5 per cent. ; V., 48-83 per cent. 
Mean reduction in two hearts : A., 54-7 per cent. ; V., 46-66 per cent. 
