The Astrophysical journal . he exposures are so shortthat the images are always circular. We have now a similar instru-ment in Arequipa, so that, in general, two images should be obtained every night. Edward C. i6, 1899. AN ANNUAL REPORT ON THE PROGRESS OFASTRONOMY. I INTEND to publish an Astronomischer Jahresbericht mii Unterstut-zufig der Astronomischen Geselhchaft (Astronomical Yearly Reportaided bv the Astronomische Gesellschaft). It will give short reportsof all the works on astronomy, astrophysics and geodesy, both practi-cal and theoretical which have appeared during t
The Astrophysical journal . he exposures are so shortthat the images are always circular. We have now a similar instru-ment in Arequipa, so that, in general, two images should be obtained every night. Edward C. i6, 1899. AN ANNUAL REPORT ON THE PROGRESS OFASTRONOMY. I INTEND to publish an Astronomischer Jahresbericht mii Unterstut-zufig der Astronomischen Geselhchaft (Astronomical Yearly Reportaided bv the Astronomische Gesellschaft). It will give short reportsof all the works on astronomy, astrophysics and geodesy, both practi-cal and theoretical which have appeared during the year. The firstvolume will appear in 1900 and will contain reports of all the publi-cations of 1899. Not wishing to overlook anything I should be muchobliged if all authors of such publications, appearing as separate booksor articles in journals not usually destined and used for astronomicalpublications, would kindly communicate them to me. Walter F. Wislicenus. NiCOLAUSRING 37 Strassburg (Elsass)January 1899. PHOTOGRAPH OF THE MILKY WAY NEAR THE STAR THETA OPHIUCHI. THE ASTROPHYSICAL JOURNAL AN INTERNATIONAL REVIEW OF SPECTROSCOPYAND ASTRONOMICAL PHYSICS VOLUME IX MARCH IO99 NUMBERS ON THE SPECTRA OF STARS OF CLASS III b. By N. C. DUNER. In the beginning of the year 1893 the Upsala Observatorycame into possession of a new double refractor, provided with aSteinheil visual objective of 36 cm aperture and a photographicobjective, also by Steinheil, of 33 cm aperture. The mountingis a very perfect one by Repsold. From the first I had plannedto reexamine the stars of the III class. On the one hand it wasto be expected that with this instrument, the light-gatheringpower of which is considerably greater than that of the Lundrefractor, more details would be visible in the spectra ; while onthe other hand, eight years had already passed since the publica-tion of my memoir, Sur les etoiles a spectres de la troisiemeclasse, during which time many new stars belonging to cla
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectspectru, bookyear1895
