'' is attributed to Bosch's middle period, . Bosch produced at least sixteen triptychs: of them, eight survive fully intact with another five surviving in fragments. Bosch's works are generally organised into three periods of his life dealing with the early works (), the middle period (), and the late period ( until his death). According to Stefan Fischer, thirteen of Bosch's surviving paintings were completed in the late period, with seven attributed to his middle period. Bosch's early period is studied in terms of his workshop activity and possibly some of his drawings. Indeed, he taught pupils in the workshop, who were influenced by him. The recent
dendrochronological investigation of the oak panels by the scientists at the Bosch Research and Conservation Project led to a more precise dating of the majority of Bosch's paintings. Bosch sometimes painted in a comparatively sketchy manner, contrasting with the traditional
Early Netherlandish style of painting in which the smooth surface—achieved by the application of multiple transparent glazes—conceals the brushwork. His paintings with their rough surfaces, so-called
impasto painting, differed from the tradition of the great Netherlandish painters of the end of the 15th and the beginning of the 16th centuries, who wished to hide the work done and thus suggest their paintings as more nearly divine creations. Bosch did not date his paintings, but—unusually for the time—seems to have signed several of them, although some signatures purporting to be his are certainly not. About twenty-five paintings remain today that can be attributed to him. In the late 16th century,
Philip II of Spain acquired many of Bosch's paintings. As a result, the
Prado Museum in
Madrid now owns the
Adoration of the Magi,
The Garden of Earthly Delights, the tabletop painting of
The Seven Deadly Sins and the Four Last Things and
The Haywain Triptych.
Painting materials Bosch painted his works mostly on oak panels using oil as a medium. Bosch's palette was rather limited and contained the usual pigments of his time. He mostly used
azurite for blue skies and distant landscapes, green copper-based glazes and paints consisting of
malachite or
verdigris for foliage and foreground landscapes, and
lead-tin-yellow,
ochres and red lake (
carmine or
madder lake) for his figures.
The Garden of Earthly Delights '' in the in
Madrid, , attributed to Bosch|alt= One of his most famous triptychs is
The Garden of Earthly Delights () whose outer panels are intended to bracket the main central panel between the
Garden of Eden depicted on the left panel and the
Last Judgment depicted on the right panel. It is attributed by Fischer as a transitional painting rendered by Bosch between his middle period and his late period. In the left-hand panel God presents
Eve to
Adam. Innovatively, God is given a youthful appearance. The figures are set in a landscape populated by exotic animals and unusual semi-organic hut-shaped forms. The central panel is a broad panorama teeming with nude figures engaged in innocent, self-absorbed joy, as well as fantastical compound animals, oversized fruit, and hybrid stone formations. The right panel presents a
hellscape: a world in which humankind has succumbed to the temptations of evil and is reaping eternal damnation. Set at night, the panel features cold colours, tortured figures, and frozen waterways. The nakedness of the human figures has lost any eroticism suggested in the central panel. Large explosions in the background throw light through the city gate and spill onto the water in the panel's midground.
Triptych of the Temptation of St. Anthony '' (1501 C.) in the
National Museum of Ancient Art, Lisbon, Portugal|300x300px Bosch's
Temptation of St. Anthony triptych is one of his most famous works, along with
The Garden of Earthly Delights. It shows Saint Anthony being tempted or assailed in the desert by demons, whose temptations he resisted. Strictly speaking, there are at least two different episodes deriving from Athanasius's
Life of St. Anthony, as well as later versions of the life, which may be depicted. The most common is the temptation by seductive women, sometimes in conjunction with demonic forms. The
Martin Schongauer composition (copied, according to Vasari, by
Michelangelo) probably shows a later episode where St Anthony, normally flown about the desert and supported by
angels, was ambushed and attacked in mid-air by
devils. Anasthasius describes another episode where the saint was attacked on the ground. == Interpretation ==