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There are Indians who would, on horseback, attack and kill a bear with a lance, but are afraid to molest the animal unless they have the Indian pony as a means of escape. The arrow-heads of chert used for hunting are peculiarly fastened, in order to make the arrow revolve. The Indian feathers the arrow for the same purpose, and also carves the arrow shaft with a spiral groove.

Although this chert could not have been brittle as now, when first folded into this shape, it presents, nevertheless, here and there, at the points of greatest flexure, small cracks, which show that it was solid, and not wholly incapable of breaking at the period of its displacement. The numerous rents alluded to are not empty, but filled with chalcedony and quartz.

At Folkestone they contain layers of calcareous matter and chert, and at Hythe, in the neighbourhood, as also at Maidstone and other parts of Kent, the limestone called Kentish Rag is intercalated. This somewhat clayey and calcareous stone forms strata two feet thick, alternating with quartzose sand.

The higher portion of the Chloritic series in some districts has been called chloritic marl, from its consisting of a chalky marl with chloritic grains. In parts of Surrey, where calcareous matter is largely intermixed with sand, it forms a stone called malm-rock or firestone. In the cliffs of the southern coast of the Isle of Wight it contains bands of calcareous limestone with nodules of chert.

Intermixed with the above fossil bones were some arrowheads, made of bone, and many chipped flints, and chipped pieces of chert, a white or bleached flint weapon of the spearhead Amiens type, which was taken out of the undisturbed matrix by Mr. Williamson himself, together with a hyaena's tooth, showing that Man had either been contemporaneous with or had preceded the extinct fauna.

This was no doubt a knife of flint or chert, like those of the Neolithic ancestors of the Egyptians, and the continued use of a stone knife for this one purpose only is a very interesting instance of a ceremonial survival. We may compare the wigs of British judges.

In the same limestone there are enormous beds of chert, agates, and carnelians. This limestone is especially remarkable for its pinnacles and towers. Let it be called the tower limestone.

Thus it was that we first saw the city of the Dweller; blessed and accursed as no place on earth, or under or above earth has ever been or, that force willing which some call God, ever again shall be! "Chert!" whispered Marakinoff. "Incredible!" "Trolldom!" gasped Olaf Huldricksson. "It is Trolldom!" "Listen, Olaf!" said Larry. "Cut out that Trolldom stuff!

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 may be worth while to compare the natural history of this part of the earth with the flint and chert found in our chalk and lime-stone countries.