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See also:BONE See also:BED , a See also:term loosely used by geologists when speaking generally of any stratum or See also:deposit which contains bones of whatever See also:kind. It is also applied to those brecciated and stalagmitic deposits on the See also:floor of caves, which frequently contain osseous remains. In a more restricted sense it is used to connote certain thin layers of bony fragments, which occur upon well-defined See also:geological horizons. One of the best-known of these is the See also:Ludlow Bone Bed, which is found at the See also:base of the Downton See also:Sandstone in the Upper Ludlow See also:series. At Ludlow itself, two such beds are actually known, separated by about 14 ft. of strata. Although quite thin, the Ludlow Bone Bed can be followed from that See also:town into See also:Gloucestershire for a distance of 45 M. It is almost made up of fragments of spines, See also:teeth and scales of ganoid See also:fish. Another well-known bed, formerly known as the " See also:Bristol " or " See also:Lias " Bone Bed, exists in the See also:form of several thin layers of micaceous sandstone, with the remains of fish and saurians, which occur in the See also:Rhaetic See also:Black See also:Paper Shales that See also:lie above the See also:Keuper marls in the See also:south-See also:west of See also:England. It is noteworthy that a similar bone bed has been traced on the same geological See also:horizon in See also:Brunswick, See also:Hanover and See also:Franconia. A bone bed has also been observed at the base of the Carboniferous See also:limestone series in certain parts of the south-west of England. BONE-See also:LACE, a kind of lace made upon a See also:cushion from See also:linen See also:thread; the See also:pattern is marked out with pins, See also:round which are See also:twisted the different threads, each See also:wound on its own bobbin. The lace was so called from the fact that bobbins were formerly made of bone. Additional information and CommentsThere are no comments yet for this article.
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