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Missouri Agricultural Report. 



bottle, figure 21, allow the milk to flow slowly into the bottle. If 

 bubbles of air cause a waste of any of the milk, empty the bot- 

 tle, and try again. Always remember in testing that the sample 

 taken is an exceedingly small part of the entire quantity, for 

 which the reading of the sample is to give value. 



Third — Now take the acid measuring glass, figure 22, fill it 

 with sulphuric acid to the scratch, which is usually about three- 

 fourths of the way up. The acid is merely a tool. A few drops 

 too much or too little will do no harm. Now hold the test bottle 

 containing the milk, figure 21, in the left hand and at an angle 

 of about 45 degrees, then carefully pour the acid from the acid 

 measure into the sample of milk, allowing it to run slowly down 

 the side of the bottle, gliding gently under the milk. If the bottle 

 be held upright, or if the acid be poured in too quickly, a burnt 

 and unreliable test is likely to be caused. Now gently whirl the 

 sample, giving the bottle a circular and at the same time up and 

 down motion, in order to mix the contents of the bottle without 

 shaking any out of the top, which always remains open. When 

 the contents have been sufficiently mixed by whirling, it should be 

 a uniform dark brick-red color. At this point the bottle will be 

 extremely hot, making it necessary to handle by the neck. 



Acid Measure. 



Fourth — Now place the sample in one of the pockets of the 

 testing machine, and place a similar one exactly opposite. The 



