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No. 8. — Sections of a tuberculous udder from a cow. Practically the whole of the udder from which the 

 sections were taken was changed into tuberculous material. Long before tuberculous udders 

 become as badly diseased as the condition shown in the picture the milk contains large numbers 

 of tuberculosis germs and is very dangerous. A tuberculous udder may contain only a single 

 small tuberculous swelling through wnich the milk becomes dangerously infected with tuber- 

 culosis germs. 



