65 



The 10.78 parts of solids contained — 



Caseine 2.84 



Lactose and lactic acid . . . 6.60 



Tat 0.68 



Ash 0.66 



10.78 

 Some of the same sample of koumiss, after having been kept 

 for six days at 62° Fah., contained in 100 parts by weight — 



Water 88.47 



Alcohol 1.60 



Carbonic acid .... 1.50 



SoHds 8.43 



100.00 

 A determination of the proportion of lactic acid in this 

 koumiss, on its tenth day, or eight days older than when 

 first examined, showed 1.1 per cent. When thirty-five days 

 old this koumiss had a specific gravity of 1.023, and con- 

 tained in 100 parts by weight — 



Water 89.16 



Alcohol 1.80 



Carbonic acid .... 1.50 



SoMs 7.54 



7.54 

 To begin with, koumiss contains about the same percent- 

 age of solids as skimmed milk ; but, as will be observed on 



