Report of the Commissioner for the year ending June 30, 1899 . is worked rapidly and the other slowly. Of the 493,000,000 eggs collected, 05,630,000 were transferred to theAlpena and Cape Vincent stations. The others were hatched at thestation and planted on the spawning-grounds in the vicinity of Put-inBay, Port Clinton, Monroe Piers, and Toledo. They commenced hatch-ing on May 4 and by May 17 plants amounting to 198,540,000 had beenmade, all in Lake Erie with the exception of a few million used forstocking lakes in Indiana. Toward the close of the season the fry were sent out in a 400-gallon
Report of the Commissioner for the year ending June 30, 1899 . is worked rapidly and the other slowly. Of the 493,000,000 eggs collected, 05,630,000 were transferred to theAlpena and Cape Vincent stations. The others were hatched at thestation and planted on the spawning-grounds in the vicinity of Put-inBay, Port Clinton, Monroe Piers, and Toledo. They commenced hatch-ing on May 4 and by May 17 plants amounting to 198,540,000 had beenmade, all in Lake Erie with the exception of a few million used forstocking lakes in Indiana. Toward the close of the season the fry were sent out in a 400-gallontank on the steamer Shearwater, instead of in cans or kegs in the usualmanner. This very much simplified the work of planting, as the frywere drawn from the tanks in the hatchery by means of a 1-inchrubber hose acting as a siphon to the tank on the vessel. In this waythe vessel was loaded in about fifteen minutes, whereas it requiresfrom two to three hours to do the work in the ordinary way. Careful Report U. S. F. C. 1 899. (To face page LXXIV.) Plate REPORT OF COMMISSIONER OF FISH AND FISHERIES. LXXV examination showed that the fry were not injured by being passedthrough the pipe. When the vessel arrived on the planting groundsa section of hose about 10 feet long was attached to the bottom of thetank and die fry were allowed to pass overboard through it. By placingthe end of the hose under the surface of the water no possible injurycould result. The following gives the temperature of air and water at the stationduring the year: Month. Air. Max. °F. Water 1 Max. °F. Min. °F. Mean. Min. Mean. °F. °F. °F. 92 62 77 84 70 76 88 70 76 79 73 90 56 65 76 34 51 74 47 62 19 50 37 45 6 36 Month. , ..Apr ..May ..June . Air. Max. ° Min. Mean. Max. Min. Mean °—1118 275260 Water. ° 7521 °F. 32. 5 35 58 65
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