American Fisheries Society. 107 
several good eggs adhere to each dead one and soon all are 
spoiled. 
White fish eggs are hatched in glass jars holding about six 
and a half quarts each, about four and a half quarts of eggs be- 
ing carried in each jar, and to produce the necessary current to 
prevent the eggs from matting in the bottom about one gallon of 
water per minute is used. 
The time required for incubation is from 128 to 150 days, 
the length of time depending upon the temperature of the water. 
With water at an average temperature of 3414 degrees F. 144 
days were required for the eggs to hatch during the past winter. 
When the hatching commences, as fast as the fry break out 
of the shells they flow upward with the current and pour out of 
the spout of the jar into the trough below, and eventually find 
their way down into the large fry tanks which are provided with 
fine brass wire screens placed across the lower end of the tanks 
within a few inches of the overflow, this allows the water to pass 
out but the fry are retained. 
The fry are than dipped from the tanks placed in cans or 
kegs provided for the purpose, taken out on a steamer and 
hberated in the lake, care being taken to place the fry upon the 
spawning beds where nature would have hatched the eggs had 
they been deposited by the fish. 
Care is also taken to distribute the fry over as large an area 
as possible so as to avoid putting so many in one locality that 
there will be a scarcity of food for them, the fry from the Put- 
in-Bay station being distributed over an area of about eighty 
square miles. 
So much for the propagation of the white fish, and we will 
now turn our attention to the subject of protection, not that we 
expect to say anything which will throw much light upon the 
matter ourself, but we may be able to say something that will 
lead to a discussion of the subject by those present who can en- 
lighten us, and also those who shall read the report of the pro- 
ceedings of this meeting. 
A great number of laws have been passed by the legislatures 
of the different states bordering upon the Great Lakes, some of 
them wise and some otherwise, but no doubt all were passed with 
the very best intent for the protection of the different fishes. 
