Mechanical glass celestial sphere with terrestrial globe by E. Mollo, Vienna, for M. Trentmensky. Mechanical glass celestial sphere with terrestrial globe by E. Mollo
Glass diapositive in passe-partout frame [X14] of a drawing by Mr Wesley [plate 14] showing the solar corona as seen from Sfase, Tunisia at the solar eclipse of August 30th, 1905. Glass diapositive of a drawing showing the solar corona at the eclipse seen from Tunisia
Experimental speculum of 6 inches aperture and 24 inches focal distance, cracked across and bound together with string Experimental speculum of 6 inches aperture and 24 inches focal distance