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Proceedings of the Royal Society 
clear fall of between 3 and 4 feet between the moat and the stews, 
but one of about 5 feet between the stews and the upper pond, thus 
presenting obstacles such as the fish living in these waters could 
not surmount. 
In conclusion, I feel convinced that the so-called salmon disease 
is the fungus itself, and that no structural disturbance in the fish is 
necessary to cause fungus attack ; that this appears to me to have 
been abundantly proved by the sixty specimens which I have dis- 
sected and examined ; that it is useless to look for more information 
on the origin and cause of fungus epidemic, from the carcases of 
salmon or other fish affected with the fungus ; that the origin and 
cure or prevention of the plague must be sought for in the life history 
of the plant, which is more the work of the botanist than the anato- 
mist. 
