228 



kind of afEection has been seen in several cod, and it is important 

 to ascertain whether or not such conditions are of exceptional 

 occurrence. 



The fish was much emaciated, so that, as might be expected, 

 the presence of a large, malignant tumour has a considerable 

 influence on the conditions of health. In such cases as this 

 we may expect some diffusion, through the body, of the products 

 of the growth. This, I take it, is the justification for the 

 condemnation, as articles of human food, of fish suffering from 

 malignant, " cancerous " growths. 



The growth in question is situated on the top of the head, 

 above and behind the eyes. It is represented, about half 

 natural size, in Fig. 1. There are two principal tumours, or 



Fig. 1. 



