The late Transit of Venus Expedition gave the writer some opportunities of visiting several islands of the Hawaiian Archipelago, some details of which may prove interesting.

They form a group of islands about 10½ hours west longitude from Greenwich, and about 20° to 22° north of the equator, and differ in size from 10 miles long by 6 or 7 broad, to 90 miles by 60, which are about the dimensions of the most easterly and largest, viz., Hawaii (the Owyhee of Cook). The general lie of the islands is from north-west to south-east, those in the east displaying the most recent traces of volcanic activity.