place-names, and in so many other ways—not only in the production of the 
book, but also in the original arrangement and fitting-out of the expedition—that 
it is impossible to over-estimate our obligation to his kindness. 
Owing to the circumstances under which a great part of the manuscript 
was produced, it stood in need of considerable revision and compilation, and in 
the absence of both authors from England, Major C. H. Chepmell, /ate R.A., 
kindly undertook these duties, and has carried out a difficult task with 
painstaking skill. Expert assistance was obtained where special knowledge 
was required; and our best thanks are due to Mr. Re Ll. *Pocock, BaReS:, 
Professor J. Logan Lobley, F.G.S., F R.G.S., and Mr. R. Corless, M.A., 
F.R.Met.Soc., for consenting to revise our proofs dealing with Natural 
History, Geology, and Meteorology respectively. 
ROBERT STERLING CLARK. 
ARTHUR DE C. SOWERBY. 
August, 1912. 
(iii) 
