PREFACE. XV 



borne by the gallant Nelson, the immortal hero of the 

 Nile and Trafalgar ; and, having had the advantage of 

 talented auxiliaries in the mechanical department of this 

 work, I conceive that it is but an act of justice I am 

 doing, when I state that the Frontispiece* and the 

 Lithographic plates were drawn by my talented and 

 ingenious pupil and friend, Mr. Frederick Sexton,f 

 whose graphic illustrations, particularly of Sacred and 

 Zoological Subjects, will shortly place him at the head 

 of his profession. I am likewise indebted to him and 

 my scientific friend and student, Mr. R. W. Keene, for 

 many of the embellishments on wood, which have been 

 drawn from my own designs and selections. The wood 

 engravings were executed by Mr. John Berryman, of 

 Gough Square, London. I have also to return my 

 thanks to Mr. Sowerby and Mr. Loudon, the celebrated 

 Zoologists, and to Mr. Limbird, the publisher of the 

 Mirror, for the loan of several illustrations ; likewise to 

 Sir Arthur de Capell Brooke for much valuable inform- 

 ation, which will be found mentioned in several parts of 

 the volume. And lastly, to G. J. Guthrie, Esq., F.R.S., 

 President of, and Professor of Anatomy and Surgery to, 

 the Royal 'College of Surgeons, for many facilities I 

 have obtained in the course of my Zoological Studies, 

 and in the progress of this work, from the Hunterian 

 Museum of that splendid establishment. 



* The original drawing was presented me by my friend and pupil, 

 R. W. Keene, Esq., who executed it from my own design, made in the 

 Arctic Seas in 18^4. 



t This gentleman is connected with the Lithographic Establishment of 

 Baron Friedel, in Greek Street, Soho Square, by whom the plates were 

 printed. 



