76 DAIRY BACTERIOLOGY 



Bacteria are known which form hydrogen sulphide from sulphur, 

 and therefore also from vulcanised rubber. Milk which has passed 

 through rubber hose pipes, such as in milking machines, may 

 therefore, on warming to a relatively high temperature, acquire a 

 smell of rotten eggs. 



supplied Copenhagen with pasteurised cream which tasted good on arrival, 

 but which became tallowy before it reached the consumers, eliminated this 

 defect by rinsing the transport cans with boiled water. The rod bacteria 

 mentioned above were found both in the cream and the water from this 

 dairy. 



