48 



BULLETIN 642, U. S. DEPARTMENT OF AGRICULTURE. 



Table 21. 



-Ratio of 'bacterial growth in milk produced under condition 1 when 

 held at 44°, 10°, and 15.5° C. (40°, 50°, and 60° F.). 



Sample No. 



24 hours. 48 hours. 72 hours. | 96 hours. 



i 

 1.11 

 1.08 

 



1.25 

 

 

 1.27 







1.05 



1.09 







1.12 











4.11 



1.28 



1.20 











2.18 



6.02 



1.89 



1 







3.40 



1.03 





1.21 

 1 



1.25 



1.05 



1.38 



1.89 



1.35 



2.58 







1.11 1 



2.21 



n 



1.02 



1.10 



1.43 



1.56 



2.37 



1.11 



2.02 



11.91 



1.09 



1.04 



1 







1.10 .. 





1.21 





4.35 



1.16 

 2.30 

 2.23 



4.66 

 5.38 

 1.38 

 1.46 

 32.05 



1.28 





 1.09 





 1.95 . 



7.24 

 1.28 







Average. 



1.21 



2.C6 



5.10 



1.82 



2.34 



1, 2S5. 7 



9, 942. 8 



2.08 



8.05 



544.9 



13,913 



1.70 



7.64 



167.6 



3,911.7 



1.20 



4.72 



35.1 ! 



2, 608. 1 



2.29 



7.02 



1, 851 



9, 255. 3 



1.15 



96.20 

 3.01 . 



1,018.8 









917.8 



1.42 





54.5 



166.6 





2.97 

 4.74 

 1.84 



9.5 



369.2 



1,307.6 j 



436 1 



1.51 





2.07 



24, 358. 9 



9.80 



214. 20 



9, 285. 7 



50,476.1 



4.29 



43.60 



268 



3,021.2 



11.37 



44.30 



718. 7 | 



12, 625 



1.91 



82.30 



9,117.6 i 



16,176.4 



2.36 



6.18 

 14. 40 . 



86.3 ' 





4.37 



4, 206. 8 



4.57 





135.7 

 27.9 



80.9 



1,000 





8.23 

 7.61 



1,058.8 



2.95 





Average. 



3.34 



31.07 . 1,464. 



9, 629. 6 



15.5° C. 

 (60° F.). 



Average. 



157.1 



21,142.8 75,714.2 1,211,428.5 



6. 159. 4 24, 637. 6 



3,882.3 25,588.2 i 61,176.4 



2,783.7 23,243.2 I 159,459.4 



6,765.9 329,787.2 < 446,808.5 



5.320.7 45,660.9 



2,589 20,410.9 



22,424.2 32,121.2 



617 7,553.1 : 16,170.2 



3. 794. 8 63, 589. 7 



16,153.8 192,307.6 j 233,333.3 



20,238 390,476.1 



4,914.8 23,829.7 , 58,723.4 



10,812.5 13,750 | 931,250 



28,558.8 44,705.8 600,000 



11,318.1 50,909 



5,000 93,103.4 



42,142.8 112,142.8 



2.323.5 18,823.5 59,117.6 

 5,523.8 41,428.5 



398.6 



8, 772. 1 



288,231.8 



1 Bacterial count less than initial count. 



