Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 146.
Jokkmokk [2], 21/07/1732, ¶770:
The Lapp continues to fetch food from his store as long as there is still suitable snow for travelling, and by then the blood is as thick as pig’s blood. They carry the blood in bladders and stomachs.