"Observations of the Planet Saturn" in Astronomische Nachrichten, No. 793 [November 1851]
Altona: Astronomische Nachrichten, 1851. Quarto. No. 793. Bifolium, English text, pages 1-4. Though he was elected to the Royal Astronomical Society in 1830, his health had slowed his active life but after a remarkable recovery in 1850, here he notes first the interior faint rings, then the exterior bring ring..... More