124 TRANSACTIONS LIVEEPOOL BIOLOGICAL SOCIETY. 



prolong'ed bath in hydrog'eu peroxide. Blood vessels are 

 fairly abuudant, but their contents are generally difficult 

 to identify, and in many places the red corpuscles have 

 broken down. 



The basis of the neoplasm is a rather loose connective 

 tissue stroma, generally enclosing irregular, elongated 

 spaces. Apparently isolated nuclei lie among this 

 tissue : these evidently belong to the fibres. AVithin the 

 spaces of the stroma are cells which, on the whole, are 

 short spindles in shape. Many of them are loaded with 

 melanin granules, and in these cases the nuclear structure 

 is obscure : probably the chromatic skein has quite broken 

 down. In other cells, however, the nucleus has the usual 

 structure. Cell fragments, and even apparently loose 

 aggregations of melanin are also present, and the figure 

 shows a piece of one of the coarse connective tissue fibres 

 belonging to the layer which lies nearest to the epidermis. 



The tumour on the eye is evidently a hard fibroma. 

 Part of it is represented in section in fig. 8, PI. II, and 

 it will be seen that we have to deal with a tissue composed 

 almost entirely of relatively coarse fibrous bundles 

 running in all directions. The growth presents no very 

 remarkable characters. 



7. Fibro-Sarcoma from Gadus callarias. 



A growth cut from the snout of a cod, and sent to 

 me by Mr. Bailey, appears to be of the nature of a fibro- 

 sarcoma. It was about 7"5 cms. long, 4 cms. in width, 

 and was raised above the general surface of the head of 

 the fish about 3 cms. The outline figure below (Text-fig. 5) 

 represents its genernl appearance. It was greyisji blnck 

 in colour; and it was not capsulated in any degr(H\ its 

 tissue passing continuously into that of the hend. It 

 showed two small areas of softening. It was received 



