Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 56.
Västerbotten [1], 24/05/1732, ¶209:
24th. Close to Rödbäck there lies a fine big meadow, completely flat were it not for the hundreds of tree-covered grassy banks. All along the road and by the river, which shortly arrives at the town of Umeå, there are mineral springs full of ochre and covered with a silvery scum. I believe that Rödbäck has taken its name from their red sediment. There is a mineral spring flowing from a hill close to Rödbäck that several people have died from drinking (see Rudbeck the Elder, who has given the number of inhabitants as 82 instead of 28).