114 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



EXPLANATION OF THE PLATES. 



Plate I. Papillary Cystadenoma in a Ling. 

 Fig. 1. Section through the marginal part of the 

 inclusion represented in fig. 2. Superficially 

 there is an epithelium of ellipsoidal cells 

 becoming flattened towards the surface. 

 Centrally there is coarse fibrous tissue under- 

 going hyaline degeneration. Oil-immersion 

 lens. 



Fig. 2. Section through part of the massive tissue of the 

 cystadenoma, and through a cavity containing 

 an inclusion. The latter is probably a stage in 

 the formation of the hard, cheesy inclusions 

 represented in fig. 2, PL V. 



Fig. 3. Section through the epithelium lining a cyst. 

 The upper margin of the figure represents the 

 internal surface of the cyst. There is a base- 

 ment membrane, and beneath this a layer of 

 areolar connective tissue with leucocytes. A 

 goblet-cell epithelium was probably present, 

 but has disappeared. Oil-immersion lens. 



Fig. 4. Part of the tissue of the massive part of 

 the cystadenoma. Coarse fibrous tissue. Oil- 

 immersion lens. 



Plate II. Multiple Sarcomata in Halibut. 

 Fig. 1. The edges of three distinctly capsulated tumours. 

 The stippled areas represent the sarcomatous 

 growths, which are here mainly a fibrous tissue 

 with very numerous round and spindle cells. 

 The latter pass into a fibrous tissue. The 

 capsules are fibrous, but are not strongly 

 developed. Mag. about 25 dia. 



