[ 2 77 1 TABLE OF THE Relative Antiquity and Geogmstic Relations OF SIMPLE MINERALS. The following Table affords an interefting view of the prefent ftate of our knowledge of the relative aniiquity and geognoftic relations of many Simple Minerals. The important inferences to be drawn from the fafts it con tains, are evidences of the great value and importance of this branch of mineralogy, and fhould ftimulate us to a zealous ftudy of geognofy, that we may be enabled to in- vefligate and defcribe thefe mineralogical relations. The fafts contained in the table, are extra&ed from the writings of the moll accurate mineralogies, or are the refult of my own experience. The only table of this kind hitherto publifhed, is that by my learned and acute friend Dr Thomson, in the valuable Sketch of the Wernerian Geognofy, inferted in his admirable Syftem of Chemiftry. The