Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 139.

The Mountains [2], 16/07/1732, ¶719:

Hair gets everywhere when they are milking the reindeer because reindeer moult the whole summer; it sticks on the pail, which gets completely covered in hair. When they start milking they dip their fingers quickly in the milk and use it to soften the dirty, dry teat. When a man’s reindeer get in among his neighbour’s herd (they are fond of company and the more there are the better they thrive – which is why they often run from one herd to another), the neighbour milks them without any offence being taken by the owner.