Electuary, a mixture, consisting of medicinal substances, especially dry powders, combined with honey or sirup, in order to render them less unpleasant to the taste, and more convenient for internal use.
Elevation, (of a house,) a plan, representing the upright view of a house, as a ground-plan shows its appearance on the ground.
Euclid, a celebrated mathematician, who was born in Alexandria, in Egypt, about two hundred and eighty years before Christ. He distinguished himself by his writings on music and geometry. The most celebrated of his works, is his 'Elements of Geometry,' which is in use at the present day. He established a school at Alexandria, which became so famous, that, from his time to the conquest of Alexandria by the Saracens, (A. D. 646,) no mathematician was found, who had not studied at Alexandria. Ptolemy, King of Egypt, was one of his pupils; and it was to a question of this King, whether there were 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 way, or 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 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-board, 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 Dantzic, A. D. 1686. He made great improvements in the thermometer; and his name is sometimes used for that instrument.