AND CORAL ISLANDS. BY JAMES DWDANA, LL.D., PROFESSOR OF GEOLOGY AND MINERALOGY IN YALE COLLEGE; AUTHOR OF REPORTS IN ON GEOLOGY, ZOÖPHYTES, AND CRUSTACEA; OF A SYSTEM OF Third Edition, WITH VARious emeNDATIONS, LARGE ADDITIONS, Three new Entered according to Act of Congress, in the year 1872, by JAMES D. DANA, in the Office of the Librarian of Congress, at Washington. Copyright, 1890, BY DODD, MEAD, AND COMPANY. University Press: JOHN WILSON AND SON, Cambridge. sachian 8-19-85 11949 PREFACE TO THE THIRD EDITION. THIS third edition of the "Corals and Coral Islands" contains a full discussion of the views and arguments which have recently been brought forward in opposition to the theory of coral reefs proposed by Darwin and explained in the following pages. Besides this, changes and additions have been made in all parts of the work in order to bring it up to date of publication. Moreover, four new maps have been introduced: one, of the Central Pacific; the second, of the large coral-reef region of the Louisiade Archipelago, in the southwest Pacific; the third, a new map of the Florida and Bahama coral-reef banks, from the charts of the United States Hydrographic Department; and the fourth, a copy of part of the Hawaiian Government map of the vicinity of Honolulu, showing the coral reefs off the shores, and the positions of the many artesian borings on this border of Oahu that are throwing light on the thickness of the shore reef. The work has its value enhanced also by four new colored plates, one representing Actinias of the Pacific, and the others living corals, selected from the author's Atlas of his Exploring Expedition Report on Zoöphytes. NEW HAVEN, Ct., February 12, 1890. JAMES D. DANA. |
