PHYSICAL AND CHEMICAL EXAMINATION OF MILK 



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each time. The ether is finally evaporated and the remaining fat 

 weighed. 



WoUny's Refractometer Method (after Leach) .—The refractom- 



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eter is based on the deviation of light through a solution of fat 

 in ether at 17.5° C, the solution to be prepared according to defi- 



