What is a Sewin ?
A point in nomenclature puzzles some of the investigators. What is a Sewin ? In a number of districts, so I understand, it is used of small and young fish, whether salmon or trout, . including perhaps sonic others. In South Wales, on the other hand, it is used of the full grown fish ; and in my experience. in Pembrokeshire, it was more than your place was worth to suggest that it was not a distinct variety, if not species, of fish that by its peculiar virtues added to the fame of the Principality ! Several districts are credited, or rather credit themselves with, a particular and peculiar breed. There is a dark-backed and belly-spotted fish caught in the Dovey, espeCially near -Machynlletli, which has been specially 'christened by a name difficult for all but natives, and generally held to be entirely distinct from other, fish. The proof that all these local specialities arc just sea trout becomes over- whelming. These fish vary imMensely in appearance, according to sex and the length of time they have spent in fresh or sea water ; and, as proved lately on the Clyde, different waters affect greatly the manner of growth.
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