Universitätsbibliothek Heidelberg, Heid. Hs. 3695 EF 70,9 Frost, Edwin Brant; Yerkes Observatory; Wolf, Max [Adr.]: Briefe von Edwin Brant Frost an Max Wolf: Brief von Edwin Brant Frost von Yerkes Observatory an Max Wolf (Williams Bay, Wisconsin, 15.3.1916)

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careful and courteous attempts to point this out to him by
Professor Barnard do not seem to have convinced him.
It is certainly a fact that no instrument, however
clever, can detect stellar motions that do not exist.

You were the first to show the advantages of

the stereo-

scope in astronomy, and I wish you could find some
opportunity of gently pointing out the complete erroneousness
of the inferences which Comas Sola draws. Probably you
see the Revista, published at Barcelona. The President
of their Society took cognizance of the criticisms from
America, but it does not seem to have affected Comas

Sola. The danger is that semi-popular periodicals

will take this work seriously,especially when it is

printed in th

French Academy.

although not

lere, with some

We

we have made good use.

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about 10 years ago

comparison of

bed to know that

with new ones

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motion in the

presently

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Sciences by

bademy of

in the Procee

d later reproductions

one of our yo

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will be given

Bible to the readers.

demonstrate t

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