KOUMISS. 65 



The 10.78 parts of solids contained 



Caseine 2.84 



Lactose and lactic acid . . . . 6.60 



Fat ..... . 0.68 



Ash . . ;./ . -: . v 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 



Solids . . . ."..;.'. ..... 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 



Solids . 7.54 



100.00 

 The solids consisting of 



Caseine . . r . . , 2.57 



Lactose and lactic acid . ." . 3.82 

 Fat . ~ ' t . ..> . . .50 



Ash .65 



7.54 



To begin with, koumiss contains about the same percent- 

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



