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from trout. On January 18th three Salmon-eggs were placed 
in tumblers of salt water at 1,021 degrees; all were dead in 
three days. On the 22nd this was repeated, but none survived 
the third day. On the 19th three were placed in salt water at 
1,012 degrees, and died in three days and two hours. On the 
28th this was repeated, but the eggs were dead at the end of 
the fourth day. On the same day two more eggs were placed 
in brackish water at 1,007 degrees, but they died in four days. 
This was repeated on February 1st,and on the 9th one hatched 
and the other was alive. On the 18th and 21st two eggs were 
placed in tumblers of fresh water, and hatched out in due 
course. In the report of the Commission on the Salmon 
Fisheries in 1824, we find witnesses asserting, as did Mr 
Srravenson, that “there cannot be a doubt that Salmon spawn 
in the sea;” but Mr Hocarrs tried the experiment in 1824, 
and found that such treatment was fatal to them. Sir Jonny 
Marueson, in 1861-62, again tried the experiment, but it 
failed; and Dr Joun Davy, employing a solution of common 
salt at 1,007 degrees, found some alive on the fourth day. 
Brown dropped some eggs into sea water, and they at once 
turned white and died; and Sinctarr’s endeavours met with 
no better success. Respecting the size of the eggs of these 
fishes, we find that in 1767 Harmer wrote in the transactions 
of the Royal Society a paper on the “‘ Fecundity of Fishes,” 
remarking that the size of the eggs is nearly the same in great 
and small fishes of the same species at the same time of the 
year; others have asserted that the size of those of each species 
is unvarying. Professor Matmeren, in 1862, ventured to assert 
that the salmon in the Scandinavian lakes were a land-locked 
race, the relicts of some which in a former condition of the 
country had been able to migrate into the glacial ocean; and 
among other things, that they were smaller in size, and gave 
eggs which were less than those normally seen in the salmon. 
A celebrated museum ichthyologist snubbed the unfortunate 
professor in a way it is not worth while to repeat, while the 
poor man was probably in the right. Then M. Buancuarp, in 
1866, tells us that the eggs of the grilse are smaller than those 
of the salmon. Livineston-Stone states that brook trout on 
