This small volume presents rather well the subject of bovine tuberculosis. The author traces the disease from the Mediterranean littoral, particularly Rome, to Britain and Northern Europe. Finally, the infected high bred English cattle disseminated the disease to many other parts of the world.
No control was attempted until after the tubercle bacillus was found. Ostertag in Germany attempted, unsuccessfully, to wipe out the disease by killing off all the ill cattle. Bang, in Denmark, had more success by separating all calves from their mothers and starting new herds with the young animals. Since only 0.5 per cent of the young are infected at birth, this method was fairly successful. Another method, used mostly in England, was to do tuberculin tests in herds and regions and gradually separate the infected animals and eliminate them. Finally, the method used in the United States was to kill off all tuberculin reactors on