50 
Table IX . — Summary of results obtained by the several methods for the standardization 
of digitalis preparations — Continued. 
FROG-HEART METHODS. 
One hour. 
“Focke.” 
Perfusion. 
c. c 
Mulford No. 1 0.012 
Mulford No. 2 016 
B. W. and Co 020 
P., D. and Co 021 
N. B. and Co 022 
Merrell 024 
H. B. andW 025 
S. and D 027 
Lloyd Bros 030 
Digitalone No. 3 040 
V. 
Mulford No. 2 3. 8 
N. B. and Co 2.9 
B. W. and Co 2.7 
H. B. and W 2. 7 
S. and D 2.4 
Lloyd Bros 2. 3 
P., D. and Co 2. 1 
Merrell 2.1 
min. 
H. B. and W 18 
Mulford No. 2 19 
N. B. and Co 20 
B. W. and Co 23 
P., D. and Co 24 
S. and D 28 
Merrell 31 
Lloyd Bros 57 
Digitalone No. 3 69 
BLOOD-PRESSURE METHOD. 
Per cent. 
N. B. and Co 99 
Mulford No. 2 64 
Digitalone No. 2 55 
” B. W. and Co 51 
P., D. and Co 37 
S.andD 35 
Per cent. 
H. B. andW 33 
Merrell 26 
Digitalone No. 3 26 
Lloyd Bros 24 
Digitalone No. 1 a— 23 
a Fall. 
Table X has been arranged from Table IX to show in a numerical 
way the relative position the preparations experimented with occupy. 
The figures represent the relative position each preparation holds 
with reference to its activity as determined by the various methods 
of assay. In case two preparations showed the same strength (as 
for instance the Concentrated tincture, B. W. and Co. and Digitol, 
Mulford on mice) they have been given equal ranking. 
Table X . — Rearrangement of Table IX to show the relative activity of the following 
preparations as determined by the various methods of assay. 
Lethal dose methods. 
Frog heart methods. 
Blood 
Pressure. 
Preparations. 
Mice. 
Guinea 
pigs. 
Twelve 
hour. 
Cats. 
One 
hour. 
“Focke.” 
Perfu- 
sion. 
Per cent 
increase. 
B. W. and Co 
j 
1 
(o) 
1 
2 
3 
4 
4 
Mulford 
1 
4 
4 
1 
1 
2 
2 
Merrell. 
3 
3 
. 5 
8 
H. B. and W 
4 
2 
5 
6 
4 
1 
7 
P., D. and Co 
5 
4 
2 
3 
5 
5 
N. B. and Co 
6 
6 
3 
4 
2 
3 
1 
S. and D 
6 | 
6 
6 
5 
6 
6 
Digitalone No. 1 
8 
9 
Lloyd Bros 
9 | 
8 
9 
8 
6 
8 
10 
Digitalone No. 3 .... 
( b ) 
8 
9 
9 
8 
Digitalone No. 2 
10 
5 
a The results obtained by the twelve-hour method are not included because too few experiments were 
carried out according to it to give the preparations their proper rank. 
b Lived. 
/ 
\ 
