APPENDIX 307 
37. C. (100° Fahr.) soon destroys it, shows that the cold 
season is more favourable to its growth. 
(7) “Fish akin to salmon are more susceptible of the 
disease than others, as rainbow-trout, river-trout, and sea- 
trout when attacked succumbed in from two to four days, 
while dace and gold-fish died in about eighteen and thirty-five 
days respectively. 
(8) ‘ Bacillus salmonis pestis grows well in sea water, 
whereas Saprolegnia does not grow at all ; therefore a diseased 
salmon entering the sea, and returning to the river apparently 
free from fungus, cannot be said to be free from the 
disease.” 
