York;--by authority of the American War Department), and that the
passages in question are all taken from my second Edition published in
1856; part of them are copies of what I had myself written, the rest are
reprints of my quotations, as though the Author of the 'Prairie
Traveller' had himself originally selected them.

I take this opportunity of remarking that though I have been indebted for
information to a very large number of authors and correspondents, yet I
am sorry to be unable to make my acknowledgements except in comparatively
few instances. The fact is that the passages in this book are seldom
traceable to distinctly definite sources: commonly more than one person
giving me information that partially covers the same subject, and not
unfrequently my own subsequent enquiries modifying or enlarging the hints
I had received. Consequently I have given the names of authorities only
when my information has been wholly due to them, or when their
descriptions are so graphic that I have transferred them without
alteration into my pages, or else when their statements require
confirmation. It will be easy to see by the context to which of these
categories each quotation belongs.

Francis Galton




ART OF TRAVEL.



PREPARATORY INQUIRIES.