The Orthografia, ou Arte de Escrever, e Pronunciar com acerto a Lingua Portugueza (1734) by the eighteenth century orthographer Madureira Feijó is undoubtedly one of the most important metaorthographic works of the eighteenth century. However, it cannot be considered an independent work, since there are indications that it is but a part of the author’s neo-Alvaresian work that became famous under the title Arte Explicada. In the present paper, we intend to analyse the relevant ads that were published in the Gazeta de Lisboa Occidental, between 1729 and 1734, with the intent of proving that Feijó’s Orthografia constitutes the fourth and last part of the first edition of the Arte Explicada, published in a total of six volumes in Miguel Rodrigues’ Lisbon printing shop.
