direction of Lord Francis Egerton some full-grown
fish were carried there previous to the breeding season. These
spawned; and their produce, as was to be expected, after
descending to the sea, returned in due course, and, making
their way through the loch, ascended their native tributaries.

Leaving the country of the _Morer Chatt_ (the Celtic title of the Earls
of Sutherland) we shall now return to the retainer of the "bold
Buccleuch." We have already mentioned that Mr Shaw, having so
successfully illustrated the early history of salmon, next turned his
attention to a cognate subject, that of the sea-trout (_Salmo-trutta_?)
Although no positive observations of any value, anterior to those now
before us, had been made upon this species, it is obvious that as soon
as his discoveries regarding salmon fry had afforded, as it were, the
key to this portion of nature's secrets, it was easy for any one to
infer that the old notions regarding the former fish were equally
erroneous. Various modifications of these views took place accordingly;
but no one ascertained the truth by observation. Mr Shaw was, therefore,
entitled to proceed as if the matter were solely in his own hands; and
he makes no mention either of the "vain imaginations" of Dr Knox, the
more careful compilation of Mr Yarrell, or the still closer, but by no
means approximate calculations of Richard Parnell, M.D. In this he has
acted wisely, seeing that his own essay professes to be simply a
statement of facts, and not an historical exposition of the progress of
error.

It would, indeed, have been singular if two species, in many respects so
closely allied in their general structure any economy, had been found to
differ very materially in any essential point. It now appears, however,
that Mr Shaw's original discovery of the slow growth of salmon fry in
fresh water, applies equally to sea trout; and, indeed, his observations
on the latter are valuable not only in themselves, but as confirmatory
of his remarks upon the former species. The same principle has been
found to regulate the growth and migrations of both, and Mr Shaw's two
contributions thus mutually strengthen and support each other.

The sea trout is well known to anglers as one of the liveliest of all
the fishes subject to his lure. Two species are supposed by naturalists
to haunt our rivers--_Salmo eriox_, the bull trout of the Tweed,
comparatively rare on the western and northern coas