80 American Fisheries Society 



both are extremely hardy but neither is very desirable. 

 Among other things we expect to try white clover which 

 has been found growing in a few places on the banks of 

 the old hatchery. 



FINISHING THE EMBANKMENT. 



After the waterline of the embankments had been sod- 

 ded with swamp grass, the work of putting the embank- 

 ment in good shape was begun. Plows, harrows and king 

 drags were used. The embankments were crowned or 

 rounded from one water's edge to the other, but made 

 flat enough on top for good roads. We do not care to 

 have the embankments more than two or three feet 

 higher than the standard water height of the ponds, the 

 lower the better, so that good driveways can be main- 

 tained between the ponds. 



THE WATER SYSTEM. 



Water for the hatchery is received in Pond No. 1 

 through a twenty-one-inch pipe which carries it from a 

 receiving pond 1 1-3 miles to the west. Pond No. 1 is a 

 long pond and extends north and south across the west 

 end of the hatchery. From Pond No. 1 water is distrib- 

 uted to five chains of ponds that parallel each other and 

 stretch for a mile to the east. There are from sixteen to 

 twenty-one ponds in each chain. Each string of ponds is 

 connected with Pond No. 1 by a ten-inch pipe. If it is 

 desired to drain Pond No. 1, the five gates controlling the 

 five ten-inch pipes are closed. By placing two or three 

 eight-inch flashboards over the iron weir the water from 

 the twenty-one-inch pipe can be turned into the second 

 part of the receiving chamber which is just back of the 

 first part and separated from it by a cement partition. 

 From this second chamber there are also five ten-inch 

 pipes that carry the water under Pond No. 1 and connect 

 with the five chains of ponds. This makes it possible to 

 stop the flow of water into Pond No. 1 when it is neces- 

 sary to drain it and at the same time keep it running 



