"Lachesis Lapponica: A Tour in Lapland" is a journal of one of the most important scientific explorations in history, written by scientists and the leader of expedition Carl von Linne. It was the first work to utilize Linne's ideas of nomenclature and classification practically. In the journey that lasted over six months, Linne passed over 2000 kilometers and described more than 100 earlier unknown species of plants. He also made notes on all the birds, rocks, and plats he met on his way. The memoir describes his ideas, notes on the journey, and an account of his discoveries.