EXPERIMENT STATION REPOR/TS. 



141 



29?. 



4%. 

 0.\. 



23000 

 35000 

 19000 

 33000 

 19000 



SAMPLE XXXIX. 

 3 hours after milking. Dilution 1-500. 16° + . 



3 hours after milking. Dilution 1-1000. 16° -h. 



24000 

 43000 

 30000 

 33000 

 30000 



24000 

 43000 

 31000 

 33000 

 33000 



21000 

 55000 

 33000 

 33000 

 33000 



24000 

 56000 

 34000 

 33000 

 33000 



14000 

 23000 

 18000 

 26000 

 17000 



16000 

 25000 

 23000 

 31000 

 21000 



Milk from dairy. 



LACTOSE— FINAL SUMMARY. 



AFTER SUMMARY, 



From the above summary, it is noted that the milk germs grow best 

 on 1% lactose agar at 21° C. and on 4% lactose agar at 37° C. 



DETERMINATION OF PER CENT OF PEPTONE. 



To the third lot of media was added 1% lactose, and the same i^er- 

 centage of agar and salt as to Lots I and IT. Lot III was divided 

 into three portions; to the 1st and 2nd were added 1% and 3% peptone 

 respectively, the 3rd portion left without peptone. 



