OAHU, 23 miles N.W. of Molokai and 67 miles S.E. of .Kauai, has an irregular quadrangular form. It is traversed from S.E. to N.W. by two parallel ranges of hills separated by a low plain. The highest point in the island is Kaula, 4060 feet, in the western range; but the eastern range is much longer than the other, and its ridge is very broken : on the land side there are many ravines formed by lateral spurs, but for 30 miles on the other side it presents to the sea a nearly vertical wall without a break. The valleys are remarkable for beautiful scenery, - peaks, .42liffs, lateral ravines, cascades, and tropical vegetation combining to charm the eye. There are few craters on the loftier heights, voleanic activity appearing to have long ceased, but on the coast there are several groups of small cones with craters, some of lava, others of tuff. The greater part of the coast is surrounded by a coral reef, often half a mile wide. In several localities an old reef has been upheaved, sometimes to the height of 100 feet, and now forms part of the land. By such an upheaval a bay of the sea a mile wide and two miles long has been converted into a plain some 25 feet above the level of the ocean, and upon this plain stands Honolulu, the capital of the kingdom, noticed above.