262 



MANUAL OF FABit ANIMALS 



ings. If the teat-cups slip from the teats while the machine is 

 working, many germs are likely to be drawn into the milk pail. 

 The machines are provided with air filters, and the efficiency 

 in keeping the germ content low depends much on the condition 

 of these filters. The milk in its passage from the teats to the pail 



Fig. 83. — Dutch Belted Bull "Aoten." A first prize winner. Owned by 

 R. F. Sanders, Bristol, N. H. 



The Dutch Belted breed of dairy cattle is a native of Holland. The cows are 

 fair milkers, producing milk of average richness. The size is much smaller 

 than the Holsteins, the bulls weighing 1400 to 1800 pounds and the cows 1200 

 to 1500 pounds. The color is black, with a white belt around the body. 



must pass through the teat-cups and a few feet of rubber tubing. 

 These teat-cups and tubing are likely to crack, and these mi- 

 nute cracks become laden with germs, which are hard to wash 

 out, and if the rubber is steamed sufficiently to kill the germs, 

 it soon wears out. To obviate this difficulty it is recommended 

 to keep the teat-cups and rubber parts in a 10 per cent solu- 



