March 1897 Issue [Article] Astronomical progress of the century Download PDF Adjust Share by Henry Smith Williams, This article is only available as a PDF to subscribers. Download PDF Tags 19th century Astronomical instruments Astronomical photography Astronomical spectroscopy Astronomy F.W. (Friedrich Wilhelm) Bessel Halley's comet History John F.W. (John Frederick William), Sir Herschel Meteoritic hypothesis Nebulae Norman, Sir Lockyer Observations Stars W. (Wilhelm) Olbers Adjust Share