122 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
in the neighbourhood of wounds and scars. I am glad to 
support this interpretation by the opinion of Dr. E. 
Glynn, who has had much experience in the examination 
of human malignant tumours, and who assures me that if 
it were of such origin he would not hesitate to call it a 
mixed-cell sarcoma. That it was malignant, with respect 
to the health of the fish, appears to be evident from the 
abnormally poor condition of the latter. | Nevertheless, 
one would like to have convincing evidence that a 
sarcomatous or carcinomatous tissue pursues the same 
course in such an animal as in man, that is, by generalisa- 
tion, so that many other organs become attacked, and the 
fish succumbs to it, for such growths as have been described 
in fish appear to be usually local ones. 
The five Plates that illustrate this paper are referred 
to fully in the text. 
