Plan your visit. 225 Madison Avenue at 36th Street, New York, NY 10016.

Plan your visit. 225 Madison Avenue at 36th Street, New York, NY 10016.

Autograph letter signed : Heidelberg, to a friend and colleague, 1875 Apr. 13.

BIB_ID
106447
Accession number
MA 6977
Creator
Bunsen, Robert Wilhelm von, 1811-1899.
Display Date
1875 Apr. 13.
Description
1 item (3 p.) ; (8vo)
Summary
Referring to a rock sample sent him by the addressee; Bunsen has examined it for traces of zircon compounds but, due to imperfect isolation methods at his disposal, he has been unable to find a trace of the mineral.