In his _Astronomia Reformata_, (1665), he published a rough
and incorrect map of the Moon, compiled from observations made by
Grimaldi of Ferrara; but in designating the mountains, he named them
after eminent astronomers, and this idea of his has been carefully
carried out by map makers of later times.
A third map of the Moon was published at Rome in 1666 by Dominico
Cassini of Nice (1625-1712), the famous discoverer of Saturn's
satellites. Though somewhat incorrect regarding measurements, it was
superior to Riccioli's in execution, and for a long time it was
considered a standard work. Copies of this map are still to be found,
but Cassini's original copper-plate, preserved for a long time at the
_Imprimerie Royale_ in Paris, was at last sold to a brazier, by no less
a personage than the Director of the establishment himself, who,
according to Arago, wanted to get rid of what he considered useless
lumber!
La Hire (1640-1718), professor of astronomy in the _College de France_,
and an accomplished draughtsman, drew a map of the Moon which was
thirteen feet in diameter. This map could be seen long afterwards in the
library of St. Genevieve, Paris, but it was never engraved.
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