WHY CLEANLINESS IS NECESSARY 127 



udder are sure to be drawn in with the milk. From 

 among a number of samples of milk selected at 

 random by the London Clean Milk Society nearly 

 ten per cent, were found to contain germs of 

 tuberculosis. Diarrhceal diseases, as seen in young 

 children and weak persons, are also due to bacteria 

 which have gained entrance to the milk after it is 

 drawn from the cow. 



The bacteria in milk which produce this trouble 

 in human beings are not very well understood. It 

 does not appear to be the species of one bacteria, 

 but due to the rapid increase of a number of 

 different kinds of bacteria, the most common of 

 which is known as bacillus coli, which is a 

 bacteria derived from manure or dry particles of 

 dung. This is a highly dangerous kind, for it 

 possesses the remarkable power of forming "spores/* 

 To quote again Dr. Dhingra, " A short boiling of 

 milk is sufficient to kill lactic and most pathogenic 

 germs, but there are others which form spores, and 

 these are not destroyed by boiling. A boiled milk 

 may therefore be rich in bacteria and yet remain 

 unaltered to the naked eye. If, however, such a 

 milk be consumed by a little child, the "spores" 

 develop into organisms which rapidly decompose 

 the milk in the child's stomach (for the warmth 

 there is favourable to their new growth) and give 

 rise to gastro-intestinal disorders or diarrhoea." 



There are hundreds of people who cannot be 



