Preface 



With regard to Authorities, I must acknow- 

 ledge my indebtedness to the following books, 

 among many others : The Realm of Nature, by 

 Dr. H. R. Mill ; Report of the Scientific Results 

 of the Voyage of H.M.S. Challenger — Deep 

 Sea ; Coral Reefs, by Professor Dana ; Standard 

 Natural History, edited by J. S. Kingsley ; 

 The Microscope, by Carpenter, revised edition ; 

 British Merchant Service, by R. J. Cornwall- 

 Jones; Resources of the Sea, by Mcintosh; 

 Harvest of the Sea, by J. G. Bertram ; also 

 numerous papers and articles in the Geographical 

 Magazine, National Geographical Magazine, 

 Scottish Geographical Magazine, Proceedings of 

 Royal Society of Edi7iburgh, Annual Report of 

 Smithsonian Institution, Natural Scie^tce, etc., 

 etc., by such writers as Sir John Murray, Dr. 

 H. R. Mill, Professor James Geikie, Albert 

 Prince of Monaco, Admiral Sir W. H. L. 

 Wharton, Mr. John Milne, Mr. A. Gunther, 

 Mr. John Aitkin, etc. 



In conclusion, I beg heartily to thank the 

 Librarians of the Royal Geographical Society 

 and the Zoological Society of London for the 



