Science: A female allegory of geometry and triumphs of science, accompanied by Miguel Servet and his investigation of the circulatory system; Blasco de Garay, the inventor of navigation with use of the paddle wheel; and an Arab from Córdoba observing the stars. The Fine Arts: A woman with a rainbow and a laurel branch. Two female figures symbolising Architecture hold a building model. There are also representations of Painting, Sculpture, Literature and Music. The Earth: A female figure holding the moon with one hand and the sun lying at her feet. There are also several painted fruits of the earth relating to agriculture, industry and livestock. The drum of the dome consists of eight panels representing ancient civilization paintings, realized by Josep Togores and Manual Humbert. The shells were painted by the aforementioned artists in the grisaille technique and depict four allegories relating to the former kingdoms of León, Castille, Navarre and the Crown of Aragon. Under the shells, four sculptures are located in niches representing to one side, Law and Force by sculptor Josep Dunyach; and to the other side, Work and Religion, by sculptor Enric Casanovas. Art in Spain The 1929 International Exhibition was organised around three thematic areas: Industry, Sport and Art, the last of which led to a grand exhibition in the National Palace titled el arte en España (‘Art in Spain’). A ‘Regulation and Guarantee of the dedicated section of Art in Spain at the National Palace’ was developed, whereby the purpose of the collection was outlined: The organisers chose highlights of the history of art, particularly for their value and significance, soliciting the works from their owners as well as accepting proposals. They gathered in total some 5,000 works of diverse nature from museums, individuals, religious institutions, libraries and archives from different parts of Spain. In total the works are said to have had a value of some 800 million pesetas. The collection was organised in chronological order, from the epoch of Roman Spain to the period of Isabella II. Months later, a pre-historic section was added to the exhibition, which was located in the basement of the Palace. Amongst the pieces created exclusively for the collection were a number of commissioned dioramas which highlight the history of Spain, realised by the same artists that had participated in the decoration of the Palace. There were fifteen final themes in total, part of the twenty-seven