ils 
large ponds or lakes is likely to vary many degrees. When the water 
gets beyond 60 degrees the fry are hatched quickly with the result 
that they are weak. At a uniform temperature of 60 degrees pike 
perch eggs will hatch in about ten or twelve days. A few will hatch 
in seven days, but the bulk of the hatch will be out in ten days. Fry 
hatched in so short a time are not as strong as fry that come out in | 
from twelve to fourteen days. If the water can be so managed that 
it may be kept at a mean temperature below 60 degrees, a strong 
lot of fry may be hatched. 
We hope by means of the water arrangement planned to be able 
to maintain an adequate flow of clear water of a comparatively even 
temperature, thus insuring a successful hatch. 
Practically all the work done at the Spring Grove hatchery last 
year was of a nature calculated to produce results. Little was done 
in the way of beautifying the place. That part of the work has been 
taken up this year, and will be continued along with other work dur- 
ing the summer and fall. Grading has been done around the hatchery 
and arrangements made for the planting of shrubs and trees this fall 
and next spring. Some work is necessary on the roadway to the 
hatchery, but that will be deferred until next year. 
During the fall and winter there will be some work done on the 
interior of the hatchery. In the early fall we will build a brook and 
rainbow trout hatching box to be set into our No. 2 trough. There 
is a pipe and faucet attached to this trough that will give us an ample 
flow of clear cold spring water suitable for hatching trout. As we 
have no trout large enough to yield spawn this year, we will have to 
rely upon the Federal Government for a supply of eggs. The appli- 
cation for this spawn has already been made through Senator J. 
Hamilton Lewis, and I am assured by the Federal Bureau of Fisheries 
that the request for eggs will be granted. 
Our pike perch battery was built for 150 jars. We did not use the 
full number last year, as with a new plant and an untried water supply 
it was not deemed advisable to use more than 100 jars. During the 
winter the battery will be prepared for 150 jars. Meanwhile our 
water supply will be increased so that we will have more than enough 
for our pike perch hatching. 
Four cement trout ponds have been built on the southeast section 
of the Spring Grove property. Two acres of land at this point have 
Bechopbareained tor, Phe. trout) ponds ware 30 feet ‘long by '8 
feet wide each, and have a fall from one to the other of a little more 
than two feet. At present there is a flow of good spring water of 
about 40 gallons a minute. For the fish now in these ponds this is 
sufficient, but with an increase in fish we will need more water. ‘This 
we can get by piping the water from a nearby spring on the hillside. 
We secured from the Federal Government, through the good 
offices of Senator Lewis, 500 fingerling brook trout. A little later we 
were able to trade with the Federal Bureau of Fisheries 8,000 yearling 
black bass, for an equal number of brook and rainbow trout. ‘These 
fish were brought to Spring Grove by the Government fish car. We 
therefore have in our trout ponds more than 8,000 trout which have 
cost us no outlay of money. 
