American Fisheries Society. 175 
Mr. Meehan: That is better than I did in mine. 
Mr. Nevin: Last fall at Dousman where we have no build- 
ings and no tanks, when the fry commenced rising off the nests, 
we got two big farm tanks, 10 feet in diameter, and placed these 
below the dam and ran a pipe from the pond into the tanks, and 
with one lift of the net we could raise up half a pint of bugs, 
and we would put a tubful in the tanks and the fry would go 
after the bugs hke brook trout go after liver. We did that two 
or three times a day; it was just like fattening a lot of hogs. 
We did not lose any fry, they fed well. There was an abundance 
of food and from this pond we shipped 600,009 large mouth bass, 
and expect to ship 400,000 more. 
Mr. Clark: What kind of bugs were they ? 
Mr. Nevin: A good deal like the common louse. 
Mr. Titcomb: fs it daphnia? 
Mr. Birge: No, but of the same group. 
Mr. Nevin: The pond was filled with them. At Minocqua 
station many died from scarcity of food and we could not hold 
them any length of time, but had to ship them as soon as we 
brought them in. 
Mr. Titcomb: On this subject of food of that sort, there is 
a great field for investigation. Mr. Atkins has tried experiments 
with manure to produce this minute animal life. It does pro- 
duce it, and ordinary refuse and straw will produce it, and the 
killing of the algae with copper sulphate will increase the daph- 
nia and cyclops, for a time. We had an interesting experience at 
the fish pond in Washington this year, where one small pond had 
been enclosed for a number of years to keep a pair of faney Man- 
darin ducks. It had never been cleaned out, and the ducks had 
occupied the pond every summer for a number of years; we 
found this year that we could gather this daphnia, bucketful af- 
ter bucketful every day, for two or three weeks, and possibly they 
are doing it still; that food is suitable for the bass when they are 
ready to take food. That is the kind that we want to encourage 
I suppose, in this nursery pond project which I suggested, leav- 
