9 
Table No. 1. — Urethane. 
G. P. No. 
G. P. 
weight. 
First injection. 
Inter- 
val in 
days. 
Second injection. 
Result. 
10123 
Grams. 
510 
0.23c. c.toxineno.7+1/460 
86 
1 gm. urethane by mouth 
Dead in 3 hours. 
101 05 
530 
c. c. antitoxic horse 
serum (NYBH 10B). 
0.23 c. c. toxine no. 7+ 
86 
45 minutes later, com- 
plete narcosis, 6 c. c. 
normal horse (Teddy) 
serum, intraperitoneally. 
Dead in 75 minutes. 
Dead in 30 minutes. 
10155 
500 
1/380 c. c. antitoxic 
horse serum (NYBH 
10B). 
0.23 c. c. toxine no. 7+ 
86 
0.9 gm. urethane by 
10156 
465 
1/540 c. c. antitoxic 
horse serum (NYBH 
13C. 
0.23 c. c. toxine no. 7+ 
86 
mouth. 70 minutes later, 
complete narcosis, 6 c. c. 
normal (Frank) serum 
intraperitoneally. 
do 
Masked symptoms, 
recovered. 
1/520 c. c. antitoxic 
horse serum (NYBH 
13C). 
Table No. 2. — Urethane. 
{Controls— toxic dose.] 
G. P. No. 
Weight. 
Inoculation. 
Result. 
Control 
Grams. 
535 
1 gm. urethane by mouth, complete narcosis 
Recovered. 
Do...;. 
410 
i.5 gm. urethane by mouth, complete narcosis 
Dead in 2 hours 15 minutes 
Do 
415 
1 gm. urethane by mouth, complete narcosis. 
Dead in 7 hours. 
Do 
410 
0.9 gm. urethane by mouth, complete narcosis 
Dead in 33 hours. 
Do 
475 
do 
Recovered. 
Do 
415 
0.8 gm. urethane by mouth, complete narcosis 
Do. 
Do 
420 
0.7 gm. urethane by mouth, complete narcosis 
Do. 
CHLORAL. 
In Table No. 3 will be seen the results of the use of chloral for 
the prevention of anaphylaxis. 
While the amounts, in most cases, were not sufficient to render 
the animal absolutely insensible to pain, the narcosis was very deep; 
but, in spite of it, practically all the animals died from the second 
injection of serum. 
