Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 165.

LuleĆ„ Lappmark [2], 28/07/1732, ¶902:

The salmon fishermen come up here about a fortnight before Midsummer and remain here until St Bartholomew’s Day. That is how long the salmon are running up-river and after that the fishermen leave. Few salmon return down-river since few of them are able to escape. The fishermen come back at Michaelmas when a smaller sort of salmon arrives.