原文 (英语)

DETAILED TABLE OF CONTENTS DESCRIPTION OF THE PLATES INTRODUCTION CHAPTER I.—ATOLLS OR LAGOON-ISLANDS SECTION I.—DESCRIPTION OF KEELING ATOLL. Corals on the outer margin.—Zone of Nulliporæ.—Exterior reef.—Islets.—Coral-conglomerate.—Lagoon.—Calcareous sediment.—Scari and Holuthuriæ subsisting on corals.—Changes in the condition of the reefs and islets.—Probable subsidence of the atoll.—Future state of the lagoon. SECTION II.—GENERAL DESCRIPTION OF ATOLLS. General form