SEA-FISHERIES LABORATORY. 205 



fungus. It was at once apparent on opening the fish 

 that the viscera were in a morbid condition. The liver 

 was hard to the touch and granular in appearance, the 

 whole surface being marked by slight rounded elevations 

 from j to 1 mm. in diameter. The substance of the 

 organ was friable and easily broken down. The kidneys 

 presented a somewhat similar appearance, and the 

 spleen was also affected. The fish was a spent female, 

 and on slitting open the ovaries minute opaque bodies 

 were seen on the folds of germinal epithelium. The 

 peritoneum covering the pyloric caeca, particularly 

 where it connected these tubules, contained great 

 numbers of small opaque spherical bodies, varying in 

 diameter from 0'32 to 0'05 mm. On dissecting these 

 away they were seen to be attached together by delicate 

 strands of peritoneal tissue. Cleared in clove oil they 

 were seen to contain small round, granular masses about 

 0'04 to 006 mm. in diameter, each surrounded by a very 

 distinct structureless capsule, while round that again was 

 a fibrous capsule of variable thickness. The larger bodies 

 usually contained several (from two to eight) of these 

 spherical structures, each with its own capsule, while the 

 aggregate was also enclosed in a capsule ; exceptionally 

 a much larger number was contained in the same com- 

 pound capsule, but the usual number was small. A 

 group of these bodies is represented in fig. 4, PL II. 



Sections were made from parts of liver, renal organ 

 and ovary. The infection is very intense in the liver, 

 so much so that about three-fourths of the hepatic tissue 

 has disappeared. Three main kinds of foreign bodies 

 are to be seen. (1) Structures like that shown in fig. 1, 

 PI. I, possessing a very distinct fibrous capsule, and 

 varying greatly in size. The larger ones are essentially 

 similar to that represented in the figure, but in the 



