338 
certain of that family, were the young of salmon.” Another 
appeal was now made on July 20th, 1870, that as the pars 
““were the young of salmon, or salmon fry, the Sheriff-sub- 
stitute ought to have given effect to said proof by a judgment 
against the respondent.” The case was tried at Perth, Sep- 
tember 7th, 1870, and the defendant was finally convicted. 
June 4th, 1872, an individual was summoned before the 
Sheriff in so far as, on the 24th of April last, he did, on the 
right bank of the river Allan, by means of a rod and line, take 
or have in his possession six smolts or salmon fry. As the first 
witness observed, salmon fry meant the smolt of the salmon 
proper. The yellow-fin was the sea-trout smolt. One witness, 
Mr G. Youna, of Berwick, deposed that the orange-fins of the 
Tweed were identical with the yellow-fins of the Allan, and 
that they were the par or young of the sea-trout. Very exten- 
sive experiments had been made in the river with regard to 
these fish. He was a Tweed Commissioner, and also belonged 
to the experimental committee. They had marked these fish 
for a great number of years, and had traced them into all 
stages of their growth, from the egg to the full-grown bull or 
sea-trout. The orange -fin is the young of the sea- trout. 
They were known as “black - tails,” just before passing 
from the orange-fin into the whitling or bull trout. Mr 
Bruce remarked: “They have par to account for the young 
salmon, the small yellow trout to account for the young of the 
yellow trout, and it seemed to him that the yellow-fin could be 
nothing else thau the young of the sea-trout.” Dr GUnrHer 
deposed that “there is a distinction between the young of 
Salmo salar (the salmon) and a member of the Farios (trout). 
In the par of the former I have counted as many as nine or ten 
cross bars, and in the latter only six or seven.” “Iam not 
quite sure but that milt and ova might be found in a hybrid. 
It has been found in pars, and my theory is that where this is 
so, the first is the product of a hen salmon and a male river 
trout, as it was frequently found that a hen salmon was 
spawning on the same gravel bed with a male river trout. This 
hybrid would come to maturity sooner than a pure-bred salmon, 
ee 
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