 Complete the following phrase:  The Missal seems to have resurfaced in the 19th century, and is briefly referenced in some works about Portuguese art, such as Almeida Garretts essay that accompanies his libertine poem O Retrato de Vénus 1821, Cirilo Volkmar Machados Colecção de Memórias 1823, Francisco de São Luís Saraivas Lista de Alguns Artistas Portugueses 1839, and Atanazy Raczyńskis Les Arts en Portugal 1846. However, it was only following the 