Ptolemy, King of Egypt, was one of his pupils; and it
was to a question of this king, whether there was not a shorter way
of coming at geometry than by the study of his _Elements_, that Euclid
made the celebrated answer, "There is no royal path to geometry."
_Equator_ or _equinoctial line_: An imaginary line passing round the
earth, from east to west and directly under the sun, which always shines
nearly perpendicularly down upon all countries situated near the
equator.
_Evolve_: To throw off, to discharge.
_Exchequer:_ A court in England in which the Chancellor presides, and
where the revenues of and the debts due to the king, are recovered.
This court was originally established by King William, (called "the
Conqueror,") who died A.D. 1087; and its name is derived from a
checkered cloth (French _echiquier_, a chess-hoard, checker-work)
on the table.
_Excretion:_ Something discharged from the body, a separation of animal
matters. _Excrementitious:_ Consisting of matter excreted from the body;
containing excrements.
_Fahrenheit, (Gabriel Daniel:)_ A celebrated natural philosopher,
who was born at Dantzig, A.
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