17 
Table Xo. 4. — The stability of ihe standard tetanus toxinr A — Continued. 
Guinea pig Xo. 
Weight 
in 
grams. 
Date. 
Amount 
toxine 
subcuta- 
neously. 
Time of 
death. 
1 
Gm. 
Days. Hours. 
257 - 
305 
Jan. 5,1907 
, 0.000,006 
2 14 
25S - 
315 
do 
.000,006 
2 13 
263 
300 
Jan. 7,1907 
.000,006 
3 20 
264 
3a5 
do 
' .000,006 
4 8 
395 ; 
39.5 
Feh. 20,1907 
.000,006 
5 0 
404 
315 
Feb. 2.5,1907 
1 .000,006 
3 7 
411 
340 
do 
■ .000,006 
4 4 
412..... 
320 
do 
.000,006 
3 17 
434 :.... 
300 
Mar. 22,1907 
.000,006 
4 17 
435 
300 
do 
.000,006 
3 18 
300 
1 Mar. 28,1907 
.000.006 
4 19 
4.59 
300 
do 
.000,006 
4 18 
552 
553 
320 
330 
May 17,1907 
do 
.000.006 
.000,066 
.000,006 
4 19 
4 10 
593 
340 
June 25,1907 
5 14 
604 
3.30 
July 12,1907 
.000,006 
3 4 
609 
300 
July 20,1907 
.000,006 
4 S 
610 
310 
do 
.000,006 
5 10 
629 
630 i 
370 
i 390 
Aug. 29.1907 
do 
. 000, 006 
.000,006 
4 0 
4 8 
643 
' 32.5 
Sept. 10,1907 
.000,006 
5 15 
644 
330 
do 
.000.006 
5 S 
65S : 
340 
Oct. 11.1907 
.000,006 
4 0 
659 
663 
350 
3.50 
do 
do 
.000,006 
.000,006 
4 4 
4 0 
664 
355 
do 
.000.006 
3 12 
703 
38.5 
Dec. 19,1907 
.000,006 
4 k 20 
704 
- 390 
do 
.000,006 
5 20 
729 
730 
330 : 
340 
Feb. 10,1908 
do 
.000,006 
.000,006 
.000,006 
4 15 
3 19 
731 
340 ' 
do 
4 9 
749.. 
330 : 
Apr. 7, 1908 
.000,006 
4 0 
750 
335 
do 
.000,006 
3 17 
751 
ass 
do 
.000,006 
4 2 
752 7 
340 
do 
.000,006 
3 23 
753 
340 
do 
.000.006 
3 23 
It has fortunately developed that tliis dried poison not only 
retains its vindence when kept tmder the exact conditions -above 
mentioned, but loses its toxicity rather slowly when exposed to 
hght, heat, and other influences. One of the sealed tubes sent from 
TT asliington to Manila by mail arrived there without appreciable loss 
of toxicity. 
This dried poison, which is distributed to manufacturers and 
other laboratories engaged in the work of standardizing tetanus 
antitoxin, is therefore well suited to withstand transportation. TTe 
reconmiend, however, that it always be kept in a vacuum desicca- 
tor in a dark, cold place. 
3449 a— Bull. 43—08 2 - 
