TO2 STORRS AGRICULTURAL EXPERIMENT STATION. 
followed by an increase in the numbers of both the acid and the 
non-acid producing species. This type of results may be shown 
by the two experiments given in Tables 33 and 34. 












“LABLE 33. 
; pes ; dj 
ot on 
_3 rie ge os: 
a u +O Ah 
AGE OF MILK. 29 oe Ag ‘os 
aa <3 a 2.8 
: pean 
< 
Fresh, SoHE Lh ies es ya Rg mn pe 3, 300 1,075 33 405 
3 hours, - - - - “¥ | 2,700 975 35 217 
6 hours, - - - - - 4,442 1,800 4I 460 
. AVOLITS eiceet, piv oak oo sts emee Le ees 10,775 3,938 37 938 
12.hours, - - - - - 28,042 14,900 53 2,150 
TABLE 34. 
ci 
_¢ a |e | ge 
SG ae 43 me 
AGE OF MILK. oy eoups 38 oo 
Og tie of ay 
pq Q on | BoA 
ee | i 
Fresh, - 5 : = rae 7438 3,090 43 | 805 
3 hours, - - - - - | 6,033 2,500 AY es 800 
6 hours, - - - - - 8,275 3,180 38 13375 
g hours,” - = - : - 14,500 4,000 28 3,525 
r2‘hours, .- . o o : 41,938 7,500 18 17 5312 




The behavior of the total numbers of organisms in these ex- 
periments is similar to that in the preceding ones, the principal 
difference being in the behavior of the acid producing organ- 
isms. In both experiments the decrease in the total number of 
organisms during the first three hours was accompanied by a 
similar decrease in the number of acid producing species. As 
seen in the first table, the acids decreased from 1,075, or 33 
per cent. of the total number, to 975, or 35 per cent. of the 
total; and in the second experiment the decrease was from 
25000 tO 2;500.,. In this case there was also a decrease in the 
percentage of acids from 43 to 41. By the end of six hours 
the numbers of both the non-acid and acid producing types had 
commenced to increase, and continued to do so throughout the 
experiment. Itis principally the types of acid organisms found 
