Portrait study of a man mb-code 42-21140457 The observatory was completed in

The observatory was completed in 1676: in that year there were both solar eclipses and a transit of Mercury

18th October 1969

By the time of his death he controlled the Union Pacific

Plate 5 from the monograph 'Merkwurdige phanomene an und durch verschiedene prismen: zur richtigen wurdigung der Newton'schen und der von Gothe'schen farbenlehre'

Gloucestershite

Portrait study of a man mb-code 42-21140457 The observatory was completed inPortrait study of a man, 15th century(?) (1954). Found in the collection of the Royal Library, Windsor Castle, Windsor. A print from Leonardo da Vinci by Ludwig H Heydenreich. (London, 1954).