On the north side is Castle Rock, rising abruptly from the water's edge a thousand feet or more. Farther down the river, also on the north side, is Cape Horn, an imposing basaltic cliff projecting into the water. On the south side there descend from the lofty perpendicular walls that frown upon the river for many miles, numerous waterfalls, of indescribable beauty. Here is the lovely Oneonta, 600 feet of silver ribbon, floating from the dizzy height. A few moments more, and we are opposite the still more beautiful Multnomah Fall, which has a descent of no less than 820 feet. At this point the train stops fifteen minutes to enable passengers to ascend to the rustic bridge, there to enjoy the best possible view of this incomparable fall, and its wondrously beautiful setting, contrasting so strikingly with the wild scenery around it. At the Pillars of Hercules, two gigantic columns of rock, one on either side the track, and forming, as it were, the western gateway to this marvelous region, the railroad leaves the river, and runs right on to Portland. The steamer continues its course, past the beautiful city of Vancouver, to the mouth of the Willamette river, by which great tributary of the Columbia, it soon reaches PORTLAND. Its phenomenal growth, its commanding position on one of the great waterways of the continent, its wealth, commerce and enterprise, and the singular natural beauty of its situation, render the capital of the Pacific Northwest one of the most attractive cities on the American continent. Fifteen years ago Portland contained a population of 1,103. By 1880 the construction of the western section of the Northern Pacific Railroad, and the approaching completion of the great transcontinental system, had so stimulated the growth of the city that its population had increased to 17,577. To-day it is estimated at 30,000, or, including the suburbs of East Portland and Albina, at 40,000, and a handsomer city of its size can not be found in the United States. In everything that distinguishes a great metropolitan city, the progress of Portland has been even more remarkable than the rapid growth of its population. The handsome business blocks that line its principal streets bear witness to the magnitude of its trade and commerce, while its churches, schools and other public buildings testify to the high moral tone and refined taste of its citizens.