45 



123 



Table XIII a. 



Table 

 No. 



Species of bacteria 



No. 



Millions of 

 bacteria pr. 

 cm.^ in the 



not heated 

 culture 



Amount of bacteria pr. cm^ after '/< hour's heating to : 



60° j 



1 



65° 



70° 



75° 



80° 



85° 



XVI] 1 



I 



Streptococcus ItiermophUus . 



2 



40 



abundant 



1 



abundant 



abundant 



40 













„ 





Ô 



12 







100 





















Ü 



46 





> 



2500 



















„ 



7 



100 



* 





10000 



40 

















8 



50 







60 















XX 







12 t 



133 



* 



abundant 



340 



80 















» 



U 



55 



* 



28000 



1800 





















17 



50 



* 



40000 



5000 





















18 



160 





39000 



11700 















XXIV 







10 



40 



* 



abundant 



20 







I 







1 





glycerinaceus . . 



» 



1 



not counted 



* 



* 



1000 



20 



u 









I „ 



2 



> 



• 



Iti8 thai »t 60° 



400 















XXI 



1 » 



» 



4 



50 



* 



20000 





















1 » 



» 



5 



66 





lOUU 



740 



200 















6 



27 



* 



15000 

















xxu \ 





liquefaciens . . . 



1 



112 



* 



3000 



















5 



20 



* 



let! thin it S0° 



360 





















2 



90 



9000 



200 























» 



3 



160 



200 

























» 





7 



40 



24U(J 



120 

















XIV 







9 



100 



9000 



200 























12 



150 



Q 



Q 



Q 



Q 

















16 



70 



500 



60 



















1 





17 



64 



2000 



20 





















! 



cremoris 



1 



14 



20000 



200 

























2 





2500 



1200 

























11 



1 1 



2000 



1 



















XV 







18 





800 



20 

























19 



' 18 



900 































2 



2000 



2000 





















* 





l1 



98 















1 I 



I 







XVI 







! 2 



2,5 



























pyogenes 



1 3 



22 



























XXIV 



f : 





' 6 



1,5 

































8 



40 



; 























As a rule, those lactic acid bacteria which grow at the highest tem- 

 peratures can also stand the highest degree of heating^). 



M An exception is apparently formed by the highly heat-resisting Mbm. lacticum, which according 

 to Table XII, does not grow at over 35°. As a fæces bacterium, however, it must in a state of nature 

 be able to grow at any rate at blood heat, and the result of our experiment must thus doubtless be 

 due to the fact that the sources of nitrogen employed did not altogether satisfy this bacterium, which 

 is very particular in this respect 



