239 
of Edinburgh t Session 1878-79. 
the thickest patches some of the scales were loose, and an extravasa- 
tion of blood had taken place within the dermal sacs. On micro- 
scopical examination of this blood it was observed to be quite 
granular, containing no discs, and was freely mixed with oil globules. 
The under surface of the skin opposite to the patches where the 
scales were loose was inflamed and discoloured over an area larger 
than where the scales were loose, the tendinous attachment of the 
muscles to the skin was intact, and the muscles themselves were 
uninjured in any way. 
No. 2, a male kelt. — This salmon had twenty patches of fungus 
on its body and fins, and its mouth was quite filled with it. The 
fungus on this fish was very rank ; several patches were felted to 
five-eighths of an inch in thickness. The felting is caused in the 
first place by the filaments being twisted upon themselves and over- 
lying each other, which prevents the spores escaping from the 
zoosporangia at the apex of the filaments in which they germinate 
and grow, and by the filaments sending out innumerable delicate 
fibres, which are woven by their own growth and the action of the 
water into a thick mat, in which the detritus of the river becomes 
embedded. The blood, mucus, and faecal matter of this fish were 
examined in the same way as in the female, showing the same 
results. Several teniae were found in the intestine, otherwise the 
viscera were quite healthy. 
No. 3, a kipper grilse. — This salmon had twenty-four separate 
patches of fungus on its body, fins, and head, also a large patch 
seated on the mucous fold of the mouth, and involving both upper 
jaws and palate, which would cause difficulty of breathing, and the 
growth continuing would cause death from suffocation. 
This fish looked a decided kelt, and was labelled as such by 
Inspector Johnston of Coldstream. However, on opening the 
abdomen I was surprised to find that the testes were not fully 
developed. The pyloric caeca and intestines were loaded with fat, 
and all the viscera were in a healthy condition, and, on the most 
minute and careful examination, nothing indicating disease of any 
of the organs could be detected. Externally this fish was disgusting 
to look on, as, in addition to the numerous patches of fungus on 
its body, several cicatrices on the head from former injuries gave it 
a most repulsive expression. 
2 D 
VOL. X. 
