Artificial Mothers* Milk. 105 



place the pipette in the mouth of one of the test 

 bottles, held in a slightly inclined position so that the 

 milk will flow down the side of the tube, leaving a 

 space for the air to escape without clogging the neck, 

 and remove the finger, allowing the milk to flow into 

 the bottle. After waiting a short time for the pipette 

 to drain, blow into the upper end to expel the milk 

 held by capillary attraction in the point. If the 

 pipette is not dry when used, it should be filled with 

 the milk to be tested, and this thrown away before 

 taking the test sample. If several samples of 

 the same milk are taken for comparison, the 

 milk should be poured once from one vessel 

 to another before each sample is measured. 



ADDING THE ACID. 



T" nrj^- 



Cyreat care should be taken in handling the Fig 12. 

 acid, as it is very corrosive, causing sores upon ACID 

 the skin and destroying clothing unless quick- 

 ly removed. If, by accident, any is spilled upon the 

 clothes or hands, it should be washed off immedi- 

 ately, using plenty of water. A prompt application 

 of ammonia water to clothing upon which acid is 

 spilled may prevent the destruction of the fabric, or 

 restore the color. 



The acid measure is filled to the mark with sul- 

 phuric acid and carefully poured into the test bottle 

 containing the milk to be tested. This bottle should 

 be held in a slightly inclined position, so as to allow 

 the acid to run down the side of the bottle. The 



