The Auraicept na n-Éces is a grammatical treatise on medieval Irish Gaelic, and is one of the 3 main sources of the handwritten tradition on Ogham writing, being the others Lebor Ogaim and De dúilib feda na forfed. It was drafted by Longarad in the seventh century, although it is considered to collect materials from previous centuries.
Está compuesto por
It is composed of
I: El libro de Fenius Farsaidh / The Book of Fenius Farsaidh
II: El libro de Amergin / The Book of Amergin
III: El libro de Fercheirtne Filidh / The Book of Fercheirtne Filidh
IV: El libro de Cennfaeladh / The Book of Cennfaeladh