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wise it is useless, and you throw your fish away to die. 
Then you must remember that the quantities of food 
will increase with each year. You put the small fry in 
and they require very little animal food; but as they 
grow in size from three-quarters of a pound to two 
pounds and a half or more, the greater the demand for 
the food supply. Therefore that proportionately in- 
creases as you goon. The larger your fish, the greater 
the supply of food needed. The larger your fish are the 
better price you get for them in the market. So that 
the whole matter is a matter of circle in finance, in the 
propagating and feeding of the fish. 
Mr. Pace—There have been one or two points 
touched upon here, that I have some little information 
on which possibly may be of value. On this question of 
feeding the fish. Mr. Gilbert wants to know how much 
food it will take to feed 10,000 pounds of trout. It 
might be very easily inferred from Mr. Fairbanks’ state- 
ment that that would depend upon the amount of water, 
and the size of the pond. 
It happened last year at the station of the U. S. Fish 
Commission where I was, we raised something over nine 
thousand pounds of trout in a very small space of water : 
five ponds, eight by twenty feet, having fifty gallons 
water each per minute. Those fish measured from four 
to ten inches in length, 1 am safe in saying they were 
the largest trout of their age that have been raised in the 
United States. The food supply was very small, because 
the water was enormously rich in natural food, particu- 
larly in snails; and as you all perhaps know, snails will 
produce enormous quantities of eggs, and all trout are 
very fond of them; we allowed them to grow abundantly 
on those ponds and the snails propagated. The food 
given them was raw beef liver mixed with a mush made 
from ship stuff when the fry were very young; fed in the 
house five or six weeks on pure beef liver; then as they 
were put out in the pool in small quantities a little mush 
