214 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



(collected from Part I. of his Memoir, and separate portions of the 

 other Parts) are condensed in the foregoing pages ; but there still 

 remains much interesting matter, as will be seen by reference to 

 the contents of memoir, given above (p. 201). With regard to Coral- 

 formations generally, there are many notes on Ehrenberg's and 

 Darwin's Works on Coral Islands, &c. ; and remarks are made on 

 the Zoophytes, &c. forming reefs ; — Atolls ; — ^olian Sandstone ; — 

 increase and decrease of land ; — chalk deposit ; — angle at which sand 

 stands ; &c. There is also a series of original observations, on the 

 geology of different parts of the West Indies and of the adjacent 

 coasts of Cuba and America, by Officers of the Royal Engineers and 

 other friends of the Author. And Capt. Nelson states in the intro- 

 ductory portion of his Memoir that he wishes it to be understood, 

 that " as the results of the exertions of every officer in our corps are 

 all Corps property, the corps of Royal Engineers has contributed to 

 the general stock of geological information " — the first notice of the 

 vEolian formation ; taking rank with the Neptunian and the Plu- 

 tonic : — the first discovery of any origin of chalk* (in 1832), soon 

 followed by Mr. Darwin's perfectly independent discoveries in the 

 Pacific, and by Lonsdale's and Ehrenberg's microscopical discoveries : 

 — two modes of completing the change of a coral-formation from a 

 marine condition to that of terra firma, viz. by the agency of man- 

 groves and calciferous confervcB : — observations on the impossibility 

 of establishing a distinction between the animal and vegetable king- 

 doms: — and, lastly, the discovery of the character of the " Red-earth," 

 which, there is reason to beheve, occurs extensively in the West 

 Indies and elsewhere. 



The author regrets that the indifferent state of his eyesight 

 prevents the prosecution of his researches in the history of corals 

 and collateral subjects, and that it does not admit of his carrying out 

 his design with regard to Part III. of his Memoir by comparmg and 

 examining the works of Couthony and Dana, as has been done with 

 those of Ehrenberg and Darwin. 



Corrections to be made in the Bermuda Memoir. Trans. Geol. Soc. 

 2 Ser. vol. v. part 1. p. 103 et seq. 



Page 103, note, /or Tilden read Tylden. 



— 108, fig. 5, the more or less horizontal lines in the section, fig. 5, which are 



nearly conformable to the existing surface, should have been 

 more distinctly indicated as the ancient successive sm-faces of 

 the " red earth." 



— line 7 from bottom, /or masses of corals read masses of corals within 



surf-range. 



— 110, — 8 from top, /or Quenodis read Quenvais. 



111. — 7 from top, a/^er may be found 1 , ..,. r 



,;„' ' """1 "^"F) -^j.. .. I . ^ reatf withm surf-range. 



— 112, — 9 from top, after high water J ° 



— — — 11 from top, /or Millepore read Nullipore. 



* Berm. Mem. I. c. p. 114. 



