Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 118.

The Mountains [1], 09/07/1732, ¶620:

When all the reindeer have lain down, each Lapp takes a thin rope, hangs it in loops on his hand and then casts it at the one he wants to catch so that it falls over the animal’s neck and she is unable to run far away. Then a halter is put over her horns and neck. There are small posts driven into the ground and 4 reindeer are tethered to each post while they are being milked by man and wife, servant and maid. If the milk will not flow quickly, they hit the udder fairly hard with their hands and that makes the milk flow.