80 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



DISEASED AND ABNORMAL CONDITIONS OF 

 MARINE FISHES. 



By James Johnstone, D.Sc. 



(With seven Plates and seven Text-figures.) 



Contents. page 



1. Piscine Sarcomata, with special reference to cases of multiple 



tumours in Halibut and Cod - 80 



Malignant Tumours in Marine Fishes ... 81 



Distribution of the Tumours - - - - - 85 



Encapsulation and Boundaries of the Tumours - 87 



Histology of the Tumours - 92 



Degeneration of Sarcomatous Tumours - - - 94 



2. Haemangioma in the eye of a Stickleback .... 103 



3. Papillary Cystadenoma in a Ling 106 



4. A Plaice with only one eye 110 



5. Explanation of the plates - - 114 



1. Piscine Sarcomata, with special reference to 

 Cases of Multiple Tumours in Halibut and Cod. 



On June 16th, 1914, Mr. F. Stokes, Port Sanitary 

 Inspector at Grimsby, sent me a large part of a Halibut 

 which had been caught by a steam trawler and landed at 

 Grimsby. The whole fish had been put aside as unsuit- 

 able for human food, but the Inspector subsequently 

 exercised a praiseworthy discretion in allowing the 

 anterior part to pass into commerce in the usual way, and 

 in sending me the posterior part for examination. The 

 entire fish weighed about 16 stones, and considering the 

 price of halibut, it must be admitted that condemnation 

 of even half of this valuable product was an act of public 

 duty involving some responsibility. The responsibility 

 was honestly taken in this case, and, in my opinion, 

 wisely so, for the part of the fish sent to me was certainly 



