Universitätsbibliothek Heidelberg, Heid. Hs. 3695 EP 52,12 Pickering, Edward Charles; Wolf, Max [Adr.]: Briefe von Edward Charles Pickering an Max Wolf: Brief von Edward Charles Pickering an Max Wolf (Cambridge, Mass., 10.6.1912)

HARVARD COLLEGE OBSERVATORY,

CAMBRIDGE, MASS.

June 10
fu B

1912.

Professor Max Wolf

The Observatory,

Heidelberg, Germany

My dear Professor Wolf:-

importance of all observations of M T is

The

desirable to get a photographic determina-

plate on which it appears?

Yours very truly

you send me a print on glass, or celluloid film, of the portion of the

so great that it seems very
tion of its brightness. Unless you are preparing to do this, will