General Discussion of Topics. Ill 
Wilmot. They were put in charge of Mr. Chrystie, who 
had a hatching-house in this state, near Poughkeepsie. After 
hatching the fish and bringing them on for the purpose of 
introducing the young into the river, they met with such an 
unfortunate detention in the city of New York that very 
few were put in alive. We repeated the experiment in 1872, 
when we succeeded in hatching about 10,000 of the salmo 
salar, and we introduced these into a tributary of the Dela- 
ware River. In 1873, Professor Baird put into our charge, 
I think, some 40,000 eggs, of which we hatched 27,000 
young, and introduced these into another tributary of the 
Delaware River. The Fish Commission of Pennsylvania was 
formed that year, and I became a member. My connection 
with the introduction of salmon has been unofficial. After 
the introduction of the salmo salar in 1873, we introduced 
them in 1874. We then thought it unwise to experi- 
ment. further, thinking: \it -would bea ‘failure: “We 
abandoned that idea, and have been introducing the sa/mo 
guinnet, or California salmon, ever since. This year, how- 
ever, there have been nine mature salmon caught in the 
Delaware River. One of them was quite a large fish, but 
had a very weak back, in consequence of the length of time 
it had been out of salt-water. I judged from the size of 
that salmon that when it was a fresh-run fish it would have 
weighed sixteen pounds. When caught it weighed ten and a 
half pounds, and was ready to deposit its spawn. After ex- 
amining the fish, I was forced to come to the conclusion 
that the fish was not a California salmon, but a salmo salar. 
In order to have my judgment confirmed, I sent the fish to 
Professor Gill, of the Smithsonian Institute, and he pro- 
nounced it a salmo salar. This was the only fish that we 
subjected to a scientific examination. The other fish were 
