EXPERIMENTS WITH WHITE RATS 



87 



CHART 15 



Curve indicating average percentages of B. acidoph- 

 ilus appearing in fecal specimens from rats 

 fed on a diet containing lactose 

 100 



30 

 ao 

 10 



60 

 50 



JO 



20 



10 







DieT in qram:5 



AJumher ofohys offer aeimimsfr-cff^ion of- di^T- 



SL 4 6 e to IZ J^ 



CHART 16 



Graph indicating average percentages of B. acidoph- 

 ilus appearing in the different parts of the intes- 

 tine of rats fed on a diet containing lactose 



too 



9'0 



ao 



60 



50 

 40 

 30 

 20 

 lO 

 o 



Parts of alimentary canal U 



s 



Si 



o 





ft? 



o 



