L II 
fall with the water in the river. In this manner we thor- 
oughly guarded against any disaster from freshets or a sudden 
fall of the river. An examination of the accompanying table 
will show how successful the experiment was, and how small 
the daily losses of eggs. The experiment demonstrated how 
practical it is to hatch the eggs and care for the fish until the 
sac is absorbed without the expensive adjunct of an elaborate 
hatching-house. With the experiences of this season we are 
convinced that the most effectual means of stocking streams, 
with fish not easily accessible by rail and wagon, is to pursue 
methods similar to those above described. It is entirely prac- 
ticable with an equipment which can readily he carried in a 
wagon to organize a hatching-station where pure and whole- 
some water can be found, almost as quickly as a tent can be 
pitched, and that, too, on a scale sufficient to provide for a 
half million trout eggs. It will he observed that those fish 
kept in the warmer w r aters of Druid Hill Park were hatched 
and ready for distribution by the twenty-sixth of November, 
about the time the eggs which were hatching in the upper 
waters of the Potomac were freed from the shell, showing a 
retardation of about one month by the employment of the 
cold mountain water. When the development proceeds slowly, 
the young fish are more vigorous than those from rapidly 
hatched eggs. These experiments would indicate that better 
results would hereafter be obtained by seeking those localities 
with colder water. All of the fish obtained from the 200,000 
eggs transferred to the hatching-station in the north branch 
of the Potomac were turned loose in the river. The details 
of the distribution obtained from 300,000 eggs retained at the 
Druid Hill Hatching-House will be found in the accompany- 
ing table. 
The table showing the average temperature of air and 
water at Druid Hill Park for each month during the year, 
and the summary of the monthly loss and distribution of fish 
will also be found. 
