A NATURALIST'S VOYAGE.

JOURNAL OF RESEARCHES

INTO THE

NATURAL HISTORY AND GEOLOGY

OF THE

COUNTRIES VISITED DURING THE VOYAGE OF
H.M.S.BEAGLE' ROUND THE WORLD.

UNDER THE

Command of Capt. FitzRoy, R.N.

BY CHARLES DARWIN, M.A., F.R.S.,

AUTHOR OF ORIGIN OF SPECIES,' ETC.