Wirceburgi, apud P.W. Fuggart, 1726. Folio (310 x 200mm). pp. (12), 96 (recte 98), with engraved frontispiece and 21 engraved plates. Contemporary half calf, gilt ornamented spine in 6 compartments. A fine copy of the first edition of one of the rarest curiosities in geological literature. "In the early years