THE CONTROL OF TUBERCULOSIS 149 



no man who is making dairying a business can afford to hesitate 

 on this account, for over a period of ten years he will be money 

 ahead by cleaning up his herd even if his reactors are largely a 

 dead loss. 



231. Area work. — We cannot go into details as to the actual 

 working of the accredited herd plan because it varies in different 



Melba 15th of Darbalara 



World's Champion Milking Shorthorn Cow. Yearly record 29,423 pounds 

 of milk, 1316 pounds of butter fat. Owned by Scottish-Australian Investment 

 Company, Gundagia, New South Wales, Australia. 



states. Generally it is preferred to clean up by intensive campaigns 

 in small areas, such as counties or townships aiming at testing 

 every herd in the area, rather than by disconnected work all over 

 the state. The area system stimulates local interest and a clean 

 herd in a clean area has a better chance of remaining clean than 

 where surrounded by infected animals. 



