[5] PROPAGATION OF THE SCHOODIC SALMON. 637 
mediately from the spawn-takers, to stir them up thoroughly, and then 
immediately weigh them and wash them off. 
November 11.—At the old hatching house I find temperature in the 
troughs 43°; of the west aqueduct, 41°; of the spring, 46°; of the north 
aqueduct, 44°. In the west aqueduct we get highly-colored water. It 
is unfiltered, but we propose to fill up the large collecting tank with 
gravel to form a filter. 
November 12.—In old hatching house I find fifth faucet running two 
fifths of a quart per second—6 gallons per minute—and for four troughs 
30 gallons per minute. This includes the spring and the west aqueduct, 
the brook not having been admitted and the east aqueduct being tem- 
porarily shut off on account of roily water. The east aqueduct is deliv- 
ering 74 gallons per minute. ‘Total for whole house, 374 gallons per 
minute. There was a half inch of rain last night, and the brooks around 
the hatching house are running full. The fish taken now are almost 
wholly females, which indicates that the run is drawing to a close. 
We have taken now (7 p. m.) from 417 females, say, 760,000 eggs; 759 
females on hand will yield, say, 1,200,000; total, 1,960,000. I think we 
have a good prospect of catching 400 more fish, of which 324 females 
will yield, say, 480,000, making total for the season (estimate) 2,440,000. 
November 16.—I calculate our trough capacity thus: 
At oid hatching house: 
Hight troughs; at 80,000 each? s 22s... ves. b- = soe + 640, 000 
Pwo troughs, at 100/000 eachii. 2. 25-0. sca ec accesso 200, 000 
840,°000 
At new hatching house: 
(Already in use) two troughs, deep, at 360 M.. 720, 000 
(To be fitted to-day) two troughs, deep, at 320M. 640, 000 
(To be brought from old house) one long shal- 
low trough (10 inches, nine stacks)......-..- 180, 000 
(To be brought from old house) one short shal- 
low trough (6 inches, 6 stacks) ........-... - 120, 000 
1, 660, 000 
2, 500, 000 
To fit these out we need 34 deep frames; on hand, 27; the remainder 
supplied by repairing. three frames and making four new ones. We have 
in the new house and in the storehouse, including those in use, 882 
trays, with capacity of 1,646,000 eggs, proper allowance having been 
made for covers. The hatching trays with oblong meshes have not yet 
been brought into use, but shall have to use them. 
Iam reckoning 2,000 eggs per tray. Have had three trays (appear- 
ing to contain average) counted, and have got the following results: 
First tray, 2,087; second tray, 2,040; third tray, 2,025. I think it would 
