Report of the Commissioner - United States Commission of Fish and Fisheries . heds so that the water could be used over and over again, care beingtaken to aerate it as thoroughly as possible, and although the resultswere satisfactory, it is strongly urged that a better supply be securedfor the next season. Between July 17 and August 26, there were takenand placed in the hatching-troughs 5,015,000 eggs. Those collected inJuly commenced hatching about the middle of August, and owing tothe crowded condition of the troughs it became necessary to plantmany of them a few days after hatching. The las
Report of the Commissioner - United States Commission of Fish and Fisheries . heds so that the water could be used over and over again, care beingtaken to aerate it as thoroughly as possible, and although the resultswere satisfactory, it is strongly urged that a better supply be securedfor the next season. Between July 17 and August 26, there were takenand placed in the hatching-troughs 5,015,000 eggs. Those collected inJuly commenced hatching about the middle of August, and owing tothe crowded condition of the troughs it became necessary to plantmany of them a few days after hatching. The last fry hatched onOctober 15, the average period of incubation being from 34 to 35 daysfor the earlier lots and 50 days for the last. As soon as trough roompermitted, the fry were held until the yolk-sac was nearly absorbed,when they were deposited on the spawning-grounds in Clackamas station was closed when tlie last plant of fry was nmde on Decem-ber 14, the property stored, and buildings left in charge of a watchman. Report U. S. F. C ^To face page C.) Plate
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Keywords: ., bookcentury1800, bookdecade1890, bookpublis, booksubjectfisheries
