164 SEASON 1874-75. 



from two burn-trout (Sauchie fish). The eggs were taken at 

 1.35 P.M. the preceding day, October 23d, and milted at 10.20 A.M., 

 October 24th. Most of the eggs stuck to the bottom of the spawn- 

 ing-pan, and behaved in every way like freshly stripped eggs. 

 At 10 P.M. the same evening one egg died, but was supposed to 

 be one that had been dropped on the grass before milting, and 

 most likely injured by being picked up by the fingers. Total, 

 50 ova. 



These five I may treat of together, as they were placed on a 

 glass grille, divided into five compartments, in the top slate tray. 

 They eyed nicely on November 22d ; the temperature of the 

 water is not recorded, but it was above 46 F. The embryotic 

 line was first visible on November 9th, and up to November 1 5th 

 none of the eggs had turned white. On the 30th December 

 the weather was very cold, and ah 1 the slate trays were frozen, 

 but Experiments 1, 2, and 3, being in the top tray nearest the 

 water-supply, did not suffer, the ice only forming on the surface. 

 With the exception of half of Experiment 3, which took several 

 days longer, they hatched on January 25th, three days later 

 than the eggs taken the same day, but laid down in the wooden 

 boxes. 



Experiment 4 seems to have come to grief; at least I 

 can find no further entry in my note-book. Experiment 5, 

 after hatching, was mixed with Experiments 1, 2, and 3. On 

 March 21st a few of the pure sea-trout fry, then just hatching in 

 the top slate tray, had been carried by the current against the 

 screen, and their yolk-sacs had been sucked through. The 

 hybrids between the burn-trout and the Loch Leven trout, Experi- 

 ments 1, 2, 3, and 5, commenced feeding in a cannibalistic manner 

 on the debris of the suicides carried into the second slate tray, 

 to which they had been transferred. On April 19th my wife 

 visited the hatching-house and fed Experiments 1, 2, 3, and 5 

 with liver ; their stomachs were much distended, always a good 

 sign. On May 5th, the water having begun to fail at Middlethird, 

 I removed Experiments 1, 2, 3, and 5 to Craigend, where I was 



