SEA-FISHERIES LABORATORY. 217 



Fig. 10. Fibromatous tumour in Halibut. Small, 

 gland-like tubule from tlie tumour. 

 Diameter about 006 mm. 



Fig. 11. Ovarian cysts in Loyhius. Gland-like 

 structures from the submucous layer of one 

 of the thick-walled cysts. Diameter about 

 0'02 mm. The darkly-stippled area in 

 the submucous layer in fig. 6 shows the 

 positions of these structures. 



Fig. 12. Fibromatous tumour from Halibut. Part of 

 the tumour showing its generally fibrous 

 nature. Apochromatic lens, Zeiss, 1*5 mm. 



Plate II. 



Fig. 1. Tubercular nodules in Cod. Section of the 

 integument passing through a lesion. The 

 oblique, dark, thick line is a scale. The 

 darkly-stippled area is the tissues crowded 

 with acid-fast bacilli. The thickness of 

 the skin at the regions of the nodule is 

 about 12 mm. 



Fig. 2. Sarcomatous tumour from Skate. Part of the 

 body musculature infected by the morbid 

 growth. The light bodies are muscle fibres 

 cut in section. The darkly-stippled area 

 shows the locus of the sarcomatous tissue. 



Fig. 3. Tubercular nodules in Cod. Section of a 

 nodule stained with methyl-blue-eosin. 

 Zeiss apochromatic 1'3 mm. Thick fibrous 

 tissue surrounding nodules of obscure 

 structure. The finely-stippled parts are 

 the loci of the bacilli. 



