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- [Footnote: the transit of Mercury gives the longitude of Lima 5h. 17m.
51s. (79° 27´ 45´´ W. from Paris, or 77° 06´ 03´´ W. from Greenwich). Compare my Recueil d'observations astron. Vol. ii. p. 397, 419 and 428, with my Relat. hist. T. iii. p. 592.]
Potsdam, June 1849.