108 



Table IX a. 



30 



No. 



Species of bacteria 



No. 





» X as 



Witte peptone 



N'as casein peptone 



0,07 



0,28 



0.70 



1.3Ô 





25 



0.50 



I.OO 





Streptoeoeeas laelis 



4 



1.8 



4.1 



5.9 



T.y 







6.5 







» ' 



6 



1.6 



3,4 





as 







6.3 











7 



1,9 



3.6 



5,6 



5,6 







64 











oi 



1^ 



3,6 



5^ 



6,8 







aô 





XIV 











^ 



5,6 



7,4 







ai 









12 





3,6 





7,2 







7.0 









14 



2,0 



3.8 



53 



as 







7,0 











Iß 



3,8 



5.0 



7,2 







7,4 







' 



17 



lyB 







Iß 



9,0 



1 4,7 



6,3 



as 



1 



fæeiam . . 



8 



1^ 



3,8 



5.0 



64 



7,7 





6^ 









14 



1.6 



3,6 





6,3 



8,3 



5^2 



as 



6,8 





17 





5,6 



7,2 



7,4 







9,2 





1 



1 





18 



2S 



5fi 



7,2 



7,7 







912 







glgeerinaeeas . . 



1 



1,6 



3,6 



5,9 



Ifi 







64 





1 



» 



3 



1,6 



^ 



SlO 



Iß 



99 



3.8 



5,6 



5^ 







4 i 



M 



3Ä 



5J& 



6.^ 







as 





1 





6 



1,6 



3^4 



54 



6yS 







•>i 







> liquefaciens . . 



1 



1:4 



4-3 



6,0 



as 







59 





XXII 1 



3 



L6 



4,5 



6,8 



7.4 







"4 





XVI f 



j mastitidis 



2 



14 



3,4 



4*5 



a^- 







5,6 







» 



3 



Iß 



3,4 



4^ 



«4 







iß 





XVII 



> thfrmopidlm . 



6 



0^ 



2.5 



5,2 



6^ 







44 







> ertmorix 



1 



1,1 



2j0 



4,1 



5,0 



5^6 



2.7 



4,5 



as 





* 



2 1 



1,4 



2,9 



4,7 



5,9 



7,7 



^6 



64 







> > . ^ . 



10 



M 



2,9 





7,2 











XV 



> 



11 



0.7 



2,6 



4,3 



64 







6,5 









18 







3^6 



5,0 



8.1 



8,3 



44 



3^ 



7,7 







19 



1 K 



2.0 



3.4 



5^ 







4,7 







' Betaettceus arabinosaeeas . . 



6 



0^ 



h 



4,1 



4.5 







5.0 









1 



0^ 



2^ 





5,9 







5,4 





XXV 1 





8 



0^ 



2fi 



3.8 



5.4 







5,0 









9 



019 



2ß 



*A 



5.0 







59 







bucis . . 



33 



06 



1,6 



3,4 



^ 







5*9 









34 







1.5 



•2,9 



*ß 







5,9 







40 



0,7 



2,5 



3^ 



6,5 





3,6 



5.6 



4.1 







42 





t 1.* 



1 V 



4^ 



3,2 



3,6 



5l6 



4.1 



takes place, the final resuit is. that the nutritive substrate becomes alkalineM. which, as 

 already mentioned, has a detrimental effect upon the bacteria. Nutritive substrates \rith 

 good buffer action are therefore not suited to continued cultivation of aerogenes bacteria. 



'j On the basis of this interesting feature, which I pointed out in a lecture at the international 

 dairy congress at Bern in 1912 »later printed in Zeitschrift für Gaemngsphvsiok^e 1914. V. lOi Clark 

 and Libs hare, in the Joomal of Biological Chemistry. 1917. Vol XXX. p. 209, worked out an easy 

 method for the separating of coli and aerogenes bacteria. 



