MILK PAINT 



89 



FIG. 45. Shows a plate exposed one-half minute during 

 process of milking, under a cow's udder treated with a 

 5 per cent solution of carbolic acid. The animal was on 

 a cement floor and bedding was present. It will be noted 

 this plate is quite an improvement over plate shown in 

 Fig. 44. 



EXERCISE XX 

 MILK PAINT 



Stir into one gallon of skim-milk 3 pounds of 

 Portland cement and add sufficient paint powder 

 to impart desired color, and apply to board or fence 

 post while thoroughly mixed. Note the effect of 

 this paint upon standing in vessel and the necessity 

 of constant stirring while being used. Repeat the 

 experiment, using a small amount of carbolic acid or 



