Peculiar Sleeplessness.—Tromsöe.—The Aurora Borealis.—Short-lived Summer.—Flowers.—Trees.—Laplanders and their Possessions.—Reindeers.—Customs of the Lapps.—Search for Whales.—Arctic Birds.—Influence of the Gulf Stream.—Hammerfest.—The Far North Cape and the Polar Ocean.—The Midnight Sun.—Stockholm, Capital of Sweden.—Royal Palace.—Historic Upsala.—Linnæus, the Naturalist.—Crossing the Baltic and Gulf of Finland.