B., _23 March, 1840_.
(_In Humboldt’s handwriting._)—Autograph of the Prince Royal of
Prussia.—The Prince offered to Prince Metternich the chair as President
of the Archæological Institute at Rome. I was called upon to write a
letter to Prince Metternich, which the Prince Royal wanted to inclose in
his own. As it contained some praises of the Prince, he desired to have
it sealed.