return, to supply a great mass of explanations, and much additional
information with regard to part of the route which has been more
recently explored. Besides these, recourse was had to the manuscript
journals kept by two of the serjeants, one of which, the least minute
and valuable, has already been published. That nothing might be wanting
to the accuracy of these details, a very intelligent and active member
of the party, Mr. George Shannon, was sent to contribute whatever his
memory might add to this accumulated fund of information.

From these copious materials the narrative was sketched nearly in its
present form, when other pursuits diverted the attention of the writer,
and compelled him to transfer his manuscript, in its unfinished state,
with all the documents connected with it, to the present editor, to
prepare them for the press and superintend the publication. That he may
not seem to arrogate any thing from the exertions of others, he should
therefore state that, although the whole work was thus submitted to his
entire discretion, he found but little to change, and that his labour
has been principally confined to revising the manuscript, comparing it
with the original papers, and inserting such additional matter as
appears to have been intentionally deferred by the writer till the
period of a more mature revisal. These circumstances, which would
otherwise be indifferent to the public, are mentioned merely to account
for imperfections, which are in some degree inseparable from any book of
travels not written by the traveller. In a work of pure description
indeed, like the present, where the incidents themselves are the sole
objects of attraction, the part of an editor is necessarily subordinate,
nor can his humble pretensions aspire beyond the merit of rigid
adherence to facts as they are stated to him. This has been very
diligently attempted, and for this, in its full extent, the editor deems
himself responsible.