"Ozark County is bountifully supplied with springs of the finest water, and some of them of remarkably large size. The largest one is situated near the North Fork, in T. 24, R. 11 W., Sec. 32, and is known under the name of the Double Spring. It issues from near the base of a bluff of Sandstone and Magnesian Limestone, a few feet above the level of the North Fork. This spring discharges an immense volume of water, which is divided by a huge mass of Sandstone into two streams, with swift currents flowing in opposite directions to join the North Fork about one hundred and fifty yards distant from the spring. I estimated the width of these streams at not less than fifty yards. They are separated from the North Fork by a pretty wooded island one hundred yards long. The upper stream affords a good mill-site. I am informed that the quantity of water discharged by this magnificent spring is not materially diminished during the dryest seasons of the year. The temperature of the water measured at the edge of the spring, was found to be 56 deg.; the temperature of the air at the same time, 59 deg. Other springs of considerable magnitude occur in various portions of the county, giving rise to beautiful and limpid streams." The descriptions of the Natural Bridge and Friede's cave, near Rolla, previously referred to as being on page 16 of the same volume, are as follows: "On Clifty Creek found the chert bed of Sec. 21-5 occurring about sixty feet from the top of the Third Magnesian Limestone, with a road passing over its upper surface, presenting it very favorably for observation. It seemed here to be broken by vertical cracks into large rhomboidal blocks. Further up this creek in a wild and secluded spot, observed a Natural Bridge with six feet of this chert bed at its base, and Silicious Magnesian Limestone above. The span of this bridge is about thirty feet, an elevation of opening about fifteen feet above the water, the thickness of the rock above is about twelve feet, and width on top about fifteen feet. Two small streams come together, one from the west and another from the south-west. A point of the bluff on the south-west fork spans the northern fork, and terminates about sixty feet beyond in a sharp point; a few large masses of rock lie near the termination of the promontory, and fifty feet beyond, the bluffs of the opposite hills rise abruptly from the bottoms. The bluffs, both above and below, are very precipitous, the middle and lower beds of the Third Magnesian Limestone forming perpendicular escarpments, frequently studded with cedar, some occurring on top of the bridge. A perfectly clear stream of water courses through this valley. The bottoms near are overspread with a dense growth of trees and vines, among which latter I noticed the Muscadine grape. The valley at this part being shut in by its perpendicular cliffs with not a path to guide the traveler through the dense thickets, is wildly picturesque and romantic in its loneliness."