Page:Early Man in Britain and His Place in the Tertiary Period.djvu/206

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41.—Strata in Robin Hood Cave. The floor was covered with a dark layer of earth, some five or six inches in thickness, containing fragments of Roman and mediæval pottery, and other remains of Historic age. Below this (Fig. 41, a), on the left-hand side, was a layer of breccia three feet thick, and sufficiently hard to be blasted only with extreme difficulty. In other parts of the cave it diminished in thickness, and passed into thin stalagmite. It will be observed in the section that it stands in an inverse ratio in regard of thickness to the cave-earth below, b, containing bones, which was