Encouraged, perhaps, by this circumstance, the Moravian brethren attempted a mission to this country, but in vain. They were compelled to retreat to Grand Cairo, from whence, by leave of the patriarch, they visited the Copts at Behrusser, and formed a small society; but in 1783, they were driven thence, and compelled to return to Europe. More recently, however, the late king of Abyssinia (Itsa Takley Gorges) addressed a letter to Mr. Salt, the British consul in Egypt, and requested copies of some parts of both the Old and New Testaments. Copies of the Psalms, in Ethiopic, as printed by the British and Foreign Bible Society, were also sent to him. ACADEMICS, a name given to such philosophers as adopted the doctrines of Plato. They were so called from the _Academia_, a grove near Athens, where they frequently indulged their contemplations. Academia is said to derive its name from one Academus, a god or hero so called. Thus Horace,-- _Atque inter sylvas Academi quærere verum._ [And in the groves of Academus to search for truth.] The academics are divided into those of the first academy, who taught the doctrines of Plato in their original purity; those of the second or middle academy, who differed materially from the first, and inclined to skepticism; and those of the new academy. The middle school laid it down as a principle, that neither our senses, nor our reason, are to be trusted; but that in common affairs we are to conform to received opinions. The new academy maintained that we have no means of distinguishing truth, and that the most evident appearances may lead us into error; they granted the wise man opinion, but denied him certainty. They held, however, that it was best to follow the greatest probability, which was sufficient for all the useful purposes of life, and laid down rules for the attainment of felicity. The difference betwixt the middle academy and the new seems to have been this, that though they agreed in the imbecility of human nature, yet the first denied that probabilities were of any use in the pursuit of happiness; and the latter held them to be of service in such a design: the former recommended a conformity with received opinions, and the latter allowed men an opinion of their own. In the first academy, Speusippus filled the chair; in the second, Arcesilaus; and in the new or third academy, Carneades. ACCAD, one of the four cities built by Nimrod, the founder of the Assyrian empire. (See _Nimrod_.) “And the beginning of his kingdom was Babel, and Erech, and Accad, and Calneh, in the land of Shinar,” Gen. x, 10. Thus it appears that Accad was contemporary with Babylon, and was one of the first four great cities of the world.