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satellite’s shadow, the belts, and the ”great
red spot” ( Monthly Notices , R. A. S., vol.
lix., pl. x.).]
Jupiter. –Galileo’s discovery of Jupiter’s
satellites was followed by the discovery of
his belts. Zucchi and Torricelli seem to have
seen them. Fontana, in 1633, reported three
belts. In 1648 Grimaldi saw but two, and
noticed that they lay parallel to the eclip-
517