XII 
the VOYAGE OF H.M.S. CHALLENGER. 
personal sacrifices and regrets necessarily connected with the work, it has 
-on a pleasure and an honour to liave taken part in explorations and 
researches which mark the greatest advance in the knowledge of our planet 
the celebrated geographical discoveries of the fifteenth and sixteenth 
centuries. 
Foi the assistance and advice 1 have received during the progress of 
;his L Mv.it undertaking I now desire to convey my thanks to my colleagues on 
, K\ i .edition ; to the contributors of the Special Memoirs; to my colleagues 
the « ditorial staff; to Sir W. H. Flower, Director, and the officers of the 
British Mus. um (Natural History), especially Dr. A. Gunther and the 
Zoologists and Botanists of the Biological Departments; to W. T. 
riiiselton Dyer, Esq., C.M.G., Director of Kew Gardens and Herbarium; 
Admiral W. .1, L. Wharton, Hydrographer, and the officers of the 
1 ! ,dr«. graphic Department of the Admiralty; to T. Digby Pigott, Esq., 
( ’ uir lKr. and the heads of the different departments of Her Majesty's 
Stationery Office ; as well as to many scientific men interested in the science 
of Oc eanography. 
John Murray. 
Chai.lk.nobh Office, 
45 Frederick Street, Edinburgh, 
January 28 , 1895 . 
