EXPERIMENT STATION BULLETINS. 



271 



TABLE III. 



In these tables the percentages of carbon dioxide are 



39.08, 34.05, 38.72, 34.24, 39.63 and 47.71. 

 The average of these is 40.57 y 6 per cent. 



This represents a loss of 19.06% per cent of carbon dioxide by aerating over glass,, 

 for the percentages of carbon dioxide after milking were 



59.31, 55.33, 58.27, 66.1, 65.65 and 53.28. 

 The average of these is 59.63%. 

 The percentages of oxygen obtained by aeration are 



22.55, 23.4, 20.85, 22.29, 17.77, 16.66. 



The average of these is 20.58% per cent. 



In the case of milk directly after milking the percentages of oxygen were 

 13.79, 12.66, 14.17, il.89, 10.96 and 15.57. 



The average of these is 13.17% per cent. 



This represents a gain of 7.41 per cent in the oxygen constituent of aerated milk over 

 milk which has not been aerated. 



The residual gas exists in the following percentages in the aerated milk, 

 38.37, 42.55, 40.43, 43.47, 32.60 and 35.63. 



The average of these is 38.84% per cent. 

 In milk after milking, 



26.9, 32.01, 27.56, 23.01, 23.39, 31.15. 

 The average of these is 27.17 per cent. 



It thus follows that the residual gas has increased 11.67% per cent. 

 After milking the percentages of oxygen to total gas less carbon dioxide are 

 33.83, 28.19, 33.86, 35.16, 32.16 and 31.96. 



The average of these is 32.53 per cent. 

 After aerating the percentages are 



37.01, 35.44, 34.00, 33.89, 35.45 and 31.86. 



The average of these is 34.60%, a gain of 2.07% per cent by aeration. 



