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coloured, it was impossible to see the fish unless they came to 
the surface, and their existence could only be demonstrated by 
throwing a very little food in, when they rose to take it. 
On July 3rd, a slight shower occurred, but rain still held off, 
and the fish appeared to -be livelier than they had been for 
several days previously, and when fed at 6.30 p.m. some of 
them jumped quite out of the water at the little food thrown 
to them. The temperature at the surface was 64°, and experi- 
ments made since show that it is 2° colder at the bottom. On 
July 4th, at 8.30 a.m., on Mr Thompson, the manager, going to 
feed these fish, one was observed dead on the surface, while 
none of the others could be seen to move. The water was at 
once drawn off, in order to shift any that might chance to be 
alive, but only two were found to be so, and 142 were dead. 
Some appeared as if they had succumbed more than twenty- 
four hours; the two which remained alive subsequently quite 
recovered, and were put into another pond. The largest of the 
hybrids was 13} inches long, and weighed just over one pound. 
On November 6th, 1886, 3,000 eggs from a Lochleven trout 
-were milted from one of these hybrids. About 80 hatched, and 
55 fish from 1} to 14 inches long, and apparently very strong, 
were placed in pond No. 2 at Howietoun: on November 9th 
they were looking well, some being as much as 5 inches long, 
and in fact the largest fry yet seen. In this case Lochleven 
trout eggs were first crossed with salmon milt, and subsequently 
a male hybrid offspring, 4 years and 8 months old, was em- 
ployed to fertilize more trout ova. In this last case, although 
the loss during incubation was about 97 per cent., the resulting 
fry appear to be peculiarly fine. 
December 27th, 1884, 7,000 ova from a Teith salmon were 
milted from a Lochleven trout, and about 5,000 hatched in the 
old house on March 11th, or after incubating 75 days. There 
was a great mortality from when they had attained to a month 
old and continuing up to the time of feeding, many being 
weak and dropsical. June 30th, 1885, about 2,000 were trans- 
ferred to pond 4. March 1st 787 were shifted to pond No. 7, 
the largest being from seven to eight inches long, but several 
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