American Fisheries Socrety. 213 
men of the ability and resources of Dr. Johnson take up this 
study of diseases of trout and of other fish. I got a wail from a 
man in the Adirondacks a short time ago. He wrote me, “Black 
bass diseased. What can we do?’ I asked him what was the 
matter and he said: “The large fish have what looks like a scale 
raised up on the side in various places, as if a No. 6 shot was 
under the skin; but you take that scale up and you will find a 
erub under there.” I do not know what the disease is, but I 
know that the bass are grubby in many waters. We cannot con- 
trol these conditions in wild waters, and when you get down to 
your hatchery ponds it is very serious. I have been unable to 
find any literature on this subject that would in any way reach 
the trouble we had. I might as well tell you where it was, it was 
at our best hatchery, Cold Spring Harbor, Long Island, and in 
my judgment it is similar to the disease that happened in a pri- 
vate preserve there eight years ago, which was investigated by a 
prominent professor who said he would take it up further in his 
laboratory, and who wrote me from Italy a short time ago that he 
had not had the time, so that we do not know what caused the 
disease. 
Personally I am very well satisfied that you know now as fish 
culturists how to feed your fish, how to propagate the best kinds 
for various waters, but, gentlemen, I do not believe there is one 
of you who outside of salting the fish for certain troubles, knows 
anything about the dangerous diseases. I sent to Germany a 
month ago for an essay or treatise on diseases of fish by an emi- 
nent fish culturist, and I found in it a lithograph showing a form 
of trouble with the barbel, which he calls the “Beulen Krank- 
heit.” It looks very much lke the trouble we had with our trout. 
Mr. Meehan: My interest in this paper is the same as that 
of the gentleman from New York. We have had trouble also in 
Pennsylvania with diseases of fish, and in one particular case, 
only a year ago, in a hatchery which we have now abandoned, at 
Allentown, we had a large quantity of trout fry which for rea- 
sons we were compelled to retain in our troughs beyond the time 
that they should have been kept. The fish began to die and be- 
fore it could be stopped over 300,000 had died, fine fish, that 
were transferred to the ponds outside died in the same way. We 
