This fishing song – singing was much associated with both gathering oysters as well as their selling in Glasgow – is from Newhaven and certainly before 1850 and called The Dredging Song.
Getting wind and kind to rhyme is almost as verbally dextrous as reducing oyster to o’u, unless the latter is read as o meaning oysters and for you.
The herring loves the merry moonlicht
The mackerel loves the wind
But the oyster loves the dredging song
For it comes o the gentle kind