The Thermal Death-Point of Tubercle Bacilli in Milk and Some Other Fluids

1. Tubercle bacilli when suspended in. distilled water, normal salt solution, bouillon and milk, are destroyed at 60 degrees C. in 15 to 20 minutes. The larger number are destroyed in 5 to 10 minutes. 2. When tubercle bacilli are suspended in milk, the pellicle which forms during the exposure at 60 degrees C. may contain living bacilli after 60 minutes.