Ohio archæological and historical quarterly . emed to be at the bottom of this quarry. Thisflint was of practically no use to primitive man but by itsremoval he was able to reach the good flint which, in this in-stance, is practically in the center of the ledge. Many largesingle crystals of quartz, measuring from three-fourth inch toone inch in diameter were found in the debris of the pit, andsome very large geodes of large-size quartz crystals lay nearthe bottom of the quarry. Large pieces of rock-crystal werefound in the workshops not far from this region and we havein the museum a single cr
Ohio archæological and historical quarterly . emed to be at the bottom of this quarry. Thisflint was of practically no use to primitive man but by itsremoval he was able to reach the good flint which, in this in-stance, is practically in the center of the ledge. Many largesingle crystals of quartz, measuring from three-fourth inch toone inch in diameter were found in the debris of the pit, andsome very large geodes of large-size quartz crystals lay nearthe bottom of the quarry. Large pieces of rock-crystal werefound in the workshops not far from this region and we havein the museum a single crystal three and one-half inches indiameter and five inches long, secured and presented by MissClara G. Mark. Miss Mark obtained the specimen, which 120 Ohio Arch, and Hist. Society Publications. was reported found on Flint Ridge, while making a study ofthe region. With the surface finds of large pieces of rockcrystal, it would not be unreasonable to expect to find verylarge crystals or masses of rock crystal, in future quarrying ofthe Fig. 6. Pit in which flint is exposed on two sides. Pit No. 8 was an excellent example of quarrying from thetop of the ledge. The pit is located about 200 yards from pitNo. 4, further within the woods of Mrs. Loughmans pit was quarried from the east and extended into the solidflint eight feet with a wid^h of seven feet. Here was a verygood opportunity to clear out the quarry and take note of the Flint Ridge. 121 three exposed sides. It was soon discovered that the quarry-man was guided by two cracks in the flint running- east andwest and about seven feet apart. On the north side thecrack was two and one-half inches wide and on the south ascant two inches wide. In the north-west corner of the quarrywas a large piece of flint, measuring three feet long and almosttwo feet thick that had been broken loose when the rents splitthe rock. The break was caused by a large cavity in the flintfilled with beautifully colored crystals of green
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