142 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



the result of a strongly inflammatory condition in the localities 

 of areas of active cell proliferation. 



Fibroma in the Orbit of a Cod.— Plate V. 



The head of a large cod, sent to me in July last by Mr. T. E,. 

 Bailey, had the interesting tumour represented in the photo- 

 graph on PI. V. This tumour was on the left side of the head, 

 and projected out from the anterior border of the orbit : it 

 was about 7 cms. in height, and about 6 cms. in diameter. It 

 had a shallow constriction separating it into upper and lower 

 parts. It was hard, and dirty-white in colour. The integu- 

 ment over it was apparently normal except that it had been 

 rubbed, or abraded mechanically. 



The tumour does not involve any part of the eye, but 

 appears to have grown from the sub-integumentary structures 

 at the anterior margin of the orbit. The excessive growth has 

 pushed the eye back, and down into the posterior part of 

 the orbit, so that it is only just seen in the photograph, 

 immediately behind the tumour, where the sharply marked 

 boundary is, of course, the posterior wall of the orbit. On 

 dissecting into the base of the tumour, the eye and eye-muscles 

 are seen to be quite normal in their size and relations ; they are 

 simply overgrown by the tumour. 



The growth is, of course, an ordinary fibroma without any 

 indications of malignancy. 



