JACOBS' CAVERN, a cavern in latitude 36° 35' N., 2 M. E. of Pineville, McDonald county, Mo., named after its discoverer, E. H. Jacobs, of Bentonville, Ark. It was scientifically explored by him, in company with Professors Charles Peabody and Warren K. Moorehead, in 1903. This small cave is hardly more than a rock-shelter, and is entirely in the "St. Joe Limestone" of the sub-carboniferous age. The ash surface of its floor was staked off into square metres, and the substance carefully removed in order. Each stalactite, stalagmite and pilaster was measured, numbered. and removed in sections. Six human skeletons were found buried
in the ashes. Seven-tenths of a cubic metre of animal bones were found: deer, bear, wolf, raccoon, opossum, beaver, buffalo, elk, turkey, woodchuck, tortoise and hog; all contemporary with man's occupancy. Three stone metates, one stone axe, one celt and 15 hammer-stones were found. The cavern was peculiarly rich in flint knives and projectile points. The rude type of the imple ments, the absence of fine pottery, and the peculiarities of the human remains, indicate a race of occupants more ancient than the "mound-builders."