E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
An academy of literature by Ptolemy, son of Lagos, especially famous for its grammarians and mathematicians. Of its grammarians the most noted are Aristarchos, Harpocration, and Eratosthens; and of its mathematicians, Ptolemy and Euclid, the former an astronomer, and the latter the geometer whose Elements are still very generally used.