[HARRISON-SAVAGE] BACTERIAL CONTENT OF THE UDDER 35 
COW —“‘Nessie.’’ 
A small grade Ayrshire of good conformation, giving only 15 lbs. 
per day. An easy milker, udder in good form. 
Strippings. 
4 milkings. 
M. lactis gigas in the milk of all quarters. 
Middlemilk. 
4 milkings. 
Same organism found and no others. 
Foremilk. 
In addition to the above, these too occurred. 
M. lactis aureus. 
M. lactis alhidus. Variety C. 
An unidentified coccus that had no action on milk. A. bacillus 
apparently identical with that found in virgin udder No. 4. 
The cow was slaughtered after ten weeks. Cultures made from 
udder tissue contained 95% large white cocci. The remaining colonies 
were of different organisms, some of a sporulating bacillus, others of 
yellow cocci. The plates containing such colonies were in all cases made 
from portions from the lower part of the udder. 
COW —“Lizzie Robb.” 
A small grade Ayrshire. Udder normal, but not large, teats small, 
a very easy milker. 
Strippings. 
6 milkings. 
No growth on the plates. 
Middlemilk. 
4 milkings. 
Quarter No. 2 was the only infected one. It contained M. lactis - 
albidus. 
A chocolate-brown coccus of unestablished identity. 
Foremilk. 
4 milkings. 
B. subtilis. 
Bact. mycoides. 
B. acidi lactici. 
A yellow sarcina. 
These organisms were found in the milk of all four quarters. 
