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." 



