This bed of ore is known as The Summit, or Guye Mine. Its elevation is 1,250 feet above the grade of the Lake Shore Railroad, and about 1,000 feet above the small stream at the foot of the mountain. There would be no difficulty in building an inclined plane from the ore bank to the small valley below. The snow in winter might interfere with mining. Ascending the mountain above the main exposure, I found what seemed to be another level of iron ore 100 feet higher; but possibly it may be the same bed displaced. Still higher appeared to be a third level of ore, and higher still, I observed a little float ore at a point nearly 2,000 feet above the grade of the railroad, on what may be called the summit of Mount Logan, at a point which my barometer made 4,700 feet above Puget Sound. [Sidenote: Denny Mine.] The Denny Mine is on a different mountain, somewhat farther to the west, but about the same distance from the railroad. It is reached also by a narrow valley from which a steep ascent of nearly 1,100 feet is made to the main exposure, which shows an edge of pure fine-grained magnetite, about twenty feet thick, with limestone above, and also beneath, apparently. Fragments of epidote, porphyry and flinty quartzite lay around. The limestone did not show so large here as on Mount Logan. The ore dips steeply toward the south, and seemed to encrust the mountain for a distance of, perhaps, 225 feet, but with a somewhat broken surface. It then passed with its limestone under quartzite cliffs which crest the mountain. The bed might have been followed around the mountain, where it is said to show at a number of places. It seemed to pass into a matrix of chert. [Sidenote: Chair Peak, or Kelly Mine.] I did not visit the Chair Peak, or Kelly Mine, which is some miles distant; but I conversed with probably every man who ever saw it, some half a dozen, including Mr. Whitworth, who made a survey of the property. It is reported as probably the largest and purest of all the deposits of magnetic ore, and lies at about the same height on the mountains. This ore would come out by way of the Middle Fork of Snoqualmie. [Sidenote: Middle Fork Mines.] I did not visit Guye's other mine, which lies high, perhaps 3,000 feet above Middle Fork. Mr. Guye represents it as similar in character to the bed elsewhere, with the addition of some brown and red ore. The other deposits mentioned I received no description of. [Sidenote: All easily reached from Seattle, Lake Shore and Eastern Railway.]