36 Rreort OF THE BACTERIOLOGIST OF THE 
morning the whey was still sweet to taste, indicating that 
fermentation had been checked and that the whey was in prime 
condition for feeding. 
_The heating of the factory utensils was Hépéa tail on July 24 
and 27, and August 3 and 9. Examination of cheese made dur- 
ing this period showed that after July 24 the spots decreased in 
number so that during a considerable portion of the time few or 
none could be found. 
After the beginning of the treatment in July there was very 
little of the cheese where the spots would be detected by any but 
an experienced eye and there was no financial loss on this account. 
Since the close of our regular observations no outbreak has oc- 
curred, and occassional examinations of the product of this fac- 
tory have failed to show any red points. 
At the beginning of the trouble we had recommended that all 
the cheese be colored to guard against loss. This was done until 
after the heating had shown itself to be effective, when a part of 
the cheese was regularly made uncolored during the remainder 
of the season. i 
EXPERIENCE IN A BRANCH OF FACTORY NUMBER ONE. 
During the season of 1901 a slight outbreak of rusty spot 
occurred at a branch of this factory. Steaming of the vats and 
utensils, according to the same plan which had been followed at 
the main factory, was immediately begun, with the result that the 
spots disappeared in a short time and have not since reappeared. 
WORK AND RESULTS IN FACTORY NUMBER TWO. 
In Factory Number Two, which was widely separated from 
Factory Number One, there was an outbreak of rusty spot in the 
autumn of 1900, causing a considerable financial loss. This fact 
was reported to us in November, too late to do anything with it 
at that time. The trouble again became so marked as to attract 
attention in July, 1901. We visited the factory on July 31 and 
found red points in stored cheese of the preceding May. 
The factory is a wooden building in ood repair situated in a 
valley near a small creek which affords opportunity for good 
drainage, but this has not been utilized to the fullest extent. The 
