10 



DAIRY ANALYSIS 



with distilled water, alcohol, and ether, and placing in 

 the water-oven ; aspirate air through while still hot, 

 cool, 'and weigh. Fill the tube with distilled water, and 

 place it in a vessel containing water at 15.5 C. till the 



^. 7, Sprengel Tube. 



water inside no longer alters in volume ; adjust the 

 level of the water accurately to the mark on the wider 

 tube by cautiously applying filter-paper to the 

 narrower end ; wipe the outside of the tube dry, and 

 weigh. The difference between the weight of the full 



