8 DAIRY LABORATORY GUIDE 



EXERCISE 1 



MICROSCOPIC EXAMINATION OP MILK 



Object : To examine microscopically milk from different 

 breeds of cows. 



Apparatus: Samples of milk, and microscope. 



Steps: 1. Place a drop of milk upon a microscope slide 

 and examine. 



2. Dilute the sample of milk with an equal quantity of 

 distilled water; then prepare a slide of the same. 



3. Make drawings of the field for each sample and note 

 the character of the impurities. 



Application: 1. In what particular do the samples 

 differ? 



2. What part of the milk contains the coloring matter? 



3. How do the fat globules compare in size, shape, and 

 number? 



4. How does the milk from the different breeds compare 

 as to color? 



