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<br />value and in character %~ % * and does not mean the ordinary <br />soil of the district ~ohich if reserved coould practically <br />swallow up the grant y~ * °~ and secondly, that in deciding <br />• whether or not in a particular case exceptional substances <br />are 'minerals' the true test is what that word means in the <br />vernacular of the mining world, the commercial world and land- <br />owners at the time of the grant, and whether the particular <br />substance was so regarded as a mineral %~~ti %." <br />Dr. Harold in his testimony gave three definitions <br />of clay, but relied mainly upon what he called the third def- <br />inition which came from~a Glossary of the DYining and Mineral <br />Industry, published by the U. S. Bureau of Mines as their <br />Bulletin 95 in 1920. The definition is as follows: "Clay, <br />a natural substance of soft rock which, when finely ground <br />and mixed with water, forms a pasty, moldable mass that pre= <br />serves its shape when air dried, The particles soften and <br />coalesce upon being highly heated and form a stony mass upon <br />cooling. Clays differ greatly mineralogically and chemically. <br />Consequently, in their physical properties most of them contain <br />many impurities, but ordinarily their base is a hydrous alum- <br />inum silicate." <br />The Court finds another definition for clay in <br />[debster's Third New International Dictionary, Page 418: "Clay, <br />la: a caidely distributed colloidal lusterless earthy substance, <br />plastic when moist but pern~anently hard when fired, that is <br />composed primarily of decomposed igneous and metamorphic rocks <br />rich in the mineral feldspar in the fonn of crystalline grains <br />less than .002 mm in diameter, whose essential constituents <br />are lcaolini.te and other hvdrous aluminous minerals and fine <br />4 <br />