By Professor WILSON.
In one vol. 18mo., with Engravings,
THE TRAVELS AND RESEARCHES OF
ALEXANDER VON HUMBOLDT;
being a condensed Narrative of his Journeys in the
Equinoctial Regions of America, and in Asiatic
Russia: together with Analyses of his
more important Investigations.
By W. MACGILLIVRAY, A. M.
In 2 vols. 18mo., with numerous Engravings,
LETTERS OF EULER