48 



OYSTERS AND DISEASE. 



In a further series of experiments we examined nineteen batches of Oysters, 

 seventeen batches of Mussels, eighteen batches of Cockles, five batches of Periwinkles, 

 and one batch of Whelks : these were all obtained from shops in various parts of 

 Liverpool. 



Table II., showing Colon-like Organisms isolated from 19 batches of Oysters. 



