456 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



I quote a few such instances of epidemiological 

 evidence with regard to the transmission of enteric fever 

 by means of shell-fish. It should be noticed that there 

 is more illness of another kind associated with the 

 consumption of mussels. It more frequently happens 

 that a person eating mussels becomes suddenly ill, with 

 all the symptoms of gastro-intestinal poisoning due to 

 ptomaines; or perhaps with symptoms of the peculiar 

 affection called "musselling." These illnesses do not 

 concern us, since they are due to obviously decomposed 

 shell-fish, or to personal idiosyncracy. 



Case — ate steamed mussels on 1/9/ '07 and 

 frequently from thence to 29/11/ '07. Then he ate one 

 mussel raw and remarked to his wife that he would have 

 no more, as they were not good. He took ill on 4/12/ '07. 

 His blood gave a + reaction on 27/ 12/ '07. He died on 

 4/l/'08. 



Case — ate cooked mussels on 17/ 12/ '07. He com- 

 menced to be ill seven days later. His blood gave a 

 + reaction on 29/ 12/ '07. He died on 3/1/ '08. He 

 had influenza prior to 24/ 11/ '07. All the family ate 

 mussels on 17/ 12/ '07, but no other one was ill. 



Case — ate raw and cooked mussels several times, 

 beginning December, '07. Others in the house also ate 

 cooked, but not raw, mussels. He became ill on 

 11-12/ 12/ '07. His blood gave a + reaction on 

 31/12/'07. He died on 27/l/'08. 



Case — ate steamed mussels and oysters at a shop on 

 21/ 12/ '07, with three companions. He became ill on 

 3/1/ '08. His blood gave a positive reaction on 

 10/1/ '08. He died on 16/1/ '08. His three companions 

 remained well. 



Case — ate cooked mussels on 21/ 12/ '07, and so did 

 a friend who was with him. He was ill on 28/ 12/ '07. 



