Fish Culturists* Association. 13 



will seek another spot, and will sometimes spawn in the middle of 

 the pond on a bare stone, in preference to the graveled raceway ; and 

 may it not often occur that some fish who liave a nest in the raceway 

 may be in the pond when the haul is made, and will return and 

 deposit their spawn after the operators have left ? And here the 

 question arises, will not the number of eggs lost by both these causes 

 nearly if not quite counterbalance the loss of iinimpregnated eggs 

 taken on the screens? 

 HoNEOYE Falls, N. Y. 



ON THE IMPREGNATION OF TROUT EGGS. 



By J. R. Dykeman. 



It will be impossible for me to attend the meeting of your associa- 

 tion, as I am attending to the details of the hatching-house myself 

 this winter, and my first fish are about at the first feeding stage. In 

 the printed report, and in all statements published, it has appeared 

 to me that figures were something all trout culturists were afraid 

 of. I will give yon some of this season's, up to and including yester- 

 day, promising that as far as they go they are as accurate as careful 

 counting (not measuring) can make them. My hatching boxes are 

 arranged on each side of a distributing box in center of house (boxes 

 four and five feet long and fourteen inches wide), in triplets, with 

 passages between, so that I have a com.plete way of keeping any lot 

 of 5,000 to 10,000, without danger of intermixing. 



Section No. 1. — Eggs taken from pond No. 3 on Collins' screens, 

 from November 9lh to 28th, 1872. Fish mostly from streams in 

 neighborhood, about one pound in weight on an average. Total 

 number of eggs, 4,559. Iinimpregnated, 1,038, or seventy-eight 

 per cent good. Commenced to hatch December 25th. Total loss 

 of fish np to 9th inst., 1,231, being twenty-eight per cent of total 

 eggs, or thirty-five per cent of the impregnated. 



Number of fish died first week after hatching 136 



Number of fish died second week after hatching 639 



Number of fish died third week after hatching 199 



Number of fish died fourth week after hatcliing 114 



Number of fish died fifth week after hatching 88 



Number of fish died sixth week after hatching 55 



