22 QUESTIONS AND ANSWERS 



dairy methods. Educational means are used as 

 far as practicable, but if any man refuses to com- 

 ply with the sanitary requirements the inspector 

 reports him to the board of health, which usually 

 cancels his license and prevents him selling milk 

 until he fulfils the demands of the board. 



For the convenience of both the farmer and the 

 inspector, and to insure uniform inspections, a 

 score card is used upon which most conditions can 

 be reported. 



The score card on pages 24 and 25 is the one 

 lately devised by the official dairy instructors' as- 

 sociation, and which is now most used in the United 

 States. 



What is meant by specific gravity? 



It means the ratio existing between the weights 

 of equal volumes of a substance and water at 4 

 degrees centigrade. 



Why is the temperature of 4 degrees centigrade 

 chosen? 

 Because water reaches its greatest density at 

 that temperature. 



What is the specific gravity of whole milk? 



The average is about 1.032, but, in some cases, it 

 may be as low as 1.029, or it may go as high as 

 1.034 ; that is, if a volume of water weighs 1,000, the 

 same volume of average whole milk would weigh 

 1,032. 



How would you calculate the weight of 40 quarts 

 milk? 



