SERIES 1. 
The following tables give the results of our studies during the win- 
ter of 1901-2: 
MANUFACTUREK NO. 1. 
Number of organisms found. 
Dry points. 
Glycerinated virus. 
a 9, 289 
&192 
a 14, 826 
b 1, 332 
a 20, 828 
b 1, 456 
c 
b 6, 249 
6,240 
b 6, 876 
9, 884 
b 7, 274 
c 
4, 923 
9,050 
10, 629 
a Orange, yellow, and white staphylococci were isolated from these points; not pathogenic for mice, 
rats, and guinea pigs. 
& Yellow and white staphylococci were isolated from these tubes. They produced no effect upon 
mice, rats, and guinea pigs. 
c These short lines separate samples bearing a different number as given by the manufacturer. 
This virus evidently contains more bacteria than a good virus should. 
The ordinary cocci of suppuration were found in both the dry points 
and the gljmerinated virus ; and although these organisms when inocu- 
lated into laboratory animals gave no results, there is little indication 
that under favorable circumstances they might not be pathogenic for 
man. While the glycerin has reduced the average number of bac- 
teria found in this virus, it still has pathogenic bacteria that it should 
not contain; and, so far as the numbers are concerned, the samples 
examined, with one exception (192), are far above the number allowed 
a good virus. 
MANUFACTURER NO. 3. 
Number of organisms found. 
Dry points. 
Glycerinated virus. 
847 
2,263 
906 
1,750 
2,088 
2,070 
2, 750 
2,440 
6,528 
111 
13, 030 
138 
246 
352 
1,121 
13 
