Heidelberg, Universitätsbibliothek Heidelberg, Heid. Hs. 3695 EC 4,9 Campbell, William Wallace; Wolf, Max [Recp.]: Briefe von William Wallace Campbell an Max Wolf: Brief von William Wallace Campbell an Max Wolf (Mount Hamilton, 6.3.1905)

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ASTRONOMER
SAN FRANOSCO

UCK OBSERVATORY


UN!VERS!TY OF CAUFORNtA

MOUNT HAMiLTON, llarch 6, 1905.

Dear Professor Wolf:
Your letter of February thirteenth
is just at hand. While we are exceedingly glad to
receive your explanation as to why the Sixth Satellite
and the planet Fedusa were confused, yet this is not
because we were irritated by the confusion, but sim-
ply because we could not understand why confusion
should exist. You may rest assured that we do not
at present, nor did we ever, have any ill feeling
toward you in this connection. Your work has many
admirers on Tount Hamilton, and we felt sure either
that our telegraphic announcement of the discovery
had been transmitted with an error or that some point
of it was misunderstood.
As to our announcement "Apparent motion retro-
grade," I think we were correct and justified, and
that the criticism of this expression was not justi-
fied. It would not have done for me to say "True
motion retrograde," because we do not even yet know
whether the true motion, that is, the orbital motion,