English: Chuch of Santa Maria del Rosario o dei Gesuati. Three Dominican Saints by Giovanni Battista Piazzetta. Above the third altar is a painting in oils by Giambattista Piazzetta of three male Dominican saints, chosen by the Dominicans to illustrate the missionary activities of their Order. This painting is noteworthy for its sober colouring. Michael Levey writes: "The real triumph of the painting is in its memorably austere tonality." In black in the foreground is St. Louis Bertrand, a Spanish saint who went as a missionary to the Caribbean, where a native priest was said to have tried to poison him (symbolised by the serpent in the chalice which he is holding). Beyond him, in white, is St. Vincent Ferrer, who was said to have appeared to the former in a vision. The third saint is Saint Hyacinth, who went as a missionary to the East. He is holding his attributes, a monstrance and an image of the virgin and child, which he was said to have carried with him into the raging torrent of the Dneister from which he was miraculously saved. 1738.