Bishop's ringe
Riggenbach, Albert, «EE 02008 .57 Beobachtungen uber die Dammerung insbesondere uber
das Purpurlicht und seine Beziehungen zum Bishop'schen Sonnenring. Habilitetionsschrift. Basel. H. Georg. 1886. 105 pp. 8%. "Bishop's ring" is named after Sereno E, Bishop and is an atomospheric or meteorological phenomenon, first observed after the eruption, on Aug. 26, 1883, of the volcano Krakatoa, in
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