CONTENTS. U 



ModeV. Lime-slate p. 467 



VI. Coral Rock >... 473 



VII. Marlite 475 



VIII. Orsten 480 



IX. Gypsum 482 



X. Alabaster 498 



XI. Chalk 504 



XII. Tufa 509 



XIII. Calcareous Intrite 519 



XIV. Calcareous Glutenite 520 



DOMAIN VI. CARBONACEOUS. 54O 



Mode I. Graphite 544 



II. Anthracite 552 



III. Coal 563 



IV. Lignite 583 



