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." 



