FLO4570181: Yellow paving branch, with fruits (chestnuts) and flowers Yellow flowers, leaves, fruit, chestnut of the Large buckeye tree, Pavia lutea. Handcolored stipple engraving from a botanical illustration by Pancrace Bessa, engraved on copper by Gabriel, from Francois Andre Michaux's “” North American Sylva,”” Philadelphia, 1857. English botanist Michaux (1770-1855) explored America and Canada in 1785 cataloging its native trees. / Bridgeman Images
FLO4573758: Harbour porpoise, short-beaked common dolphin, and epaulard killer whale - Harbour porpoise, Phocoena phocoena 1, short-beaked common dolphin, Delphinus delphis 2, and orca or killer whale, Orcinus orca 3. Handcoloured copperplate engraving from Friedrich Johann Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1795. / Bridgeman Images
PIX4573959: Detection of an exoplanet by radial velocity - Detection of an exoplanet: Radial velocity or Doppler method - This detection method is based on the study of the light spectrum of the star. A planet orbiting around a star periodically influences the movement of that star. By Doppler effect (the star's light wave shifts to blue when it approaches and decals to red when it moves away), we can measure the radial velocity of the star and know the position of the planet's orbit. An exoplanet orbiting a larger star could produce changes in position and velocity of the star as they orbit their common center of mass. Those variations in the radial velocity are known in studying the spectral lines of the star due to the Doppler effect (blue shift when the star is approaching, redshift when it is receding) / Bridgeman Images
FLO4573972: Butterfly wing, showing structure, skeleton, scales and microscopic detail. Handcoloured copperplate engraving from Bertuch's “” Bilderbuch fur Kinder”” (Picture Book for Children), Weimar, 1798. Friedrich Johann Bertuch (1747-1822) was a German publisher and man of arts most famous for his 12-volume encyclopedia for children illustrated with 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830. / Bridgeman Images
FLO4574032: Great it, Parus major 1, blue it, Parus caeruleus 2, marsh it, Poecile palustris 3, long-tailed it, Aegithalos caudatus 4, coal it, Periparus ater 5, crested it, Lopophanes cristatus 6, and bearded reedling, Panurus biarmicus 7. Handcoloured copperplate engraving from Bertuch's “” Bilderbuch fur Kinder”” (Picture Book for Children), Weimar, 1798. Friedrich Johann Bertuch (1747-1822) was a German publisher and man of arts most famous for his 12-volume encyclopedia for children illustrated with 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830. / Bridgeman Images
FLO4565008: Fancy dress costume of a hummingbird, with winged dress, bodice decorated with flowers. Handcoloured lithograph after a design by Leon Sault from “” L'Art du Travestissement” (The Art of Fancy Dress), Paris, c.1880. Sault was a theatre and opera designer and luxury fashion magazine publisher. / Bridgeman Images
FLO4565016: Allegorical costume as the element fire, with skirt and shawl decorated with flame pattern, bellows, flip-flops and brush on her belt. Handcoloured lithograph after a design by Leon Sault from “” L'Art du Travestissement” (The Art of Fancy Dress), Paris, c.1880. Sault was a theatre and opera designer and luxury fashion magazine publisher. / Bridgeman Images
FLO4565137: Fancy dress costume of a shepherdess in the Watteau style. Straw hat, silk dress embroidered with flowers, petticoats and ribbons. Handcoloured lithograph after a design by Leon Sault from “” L'Art du Travestissement” (The Art of Fancy Dress), Paris, c.1880. Sault was a theatre and opera designer and luxury fashion magazine publisher. / Bridgeman Images
FLO4565152: Fancy dress costume of a Greek woman, in bachslik (sequined veil), riding coat, apron, gold brocade dress, and diagonal bodice. Handcoloured lithograph after a design by Leon Sault from “” L'Art du Travestissement” (The Art of Fancy Dress), Paris, c.1880. Sault was a theatre and opera designer and luxury fashion magazine publisher. / Bridgeman Images
FLO4565182: Anne de Batarnay (1560-1587), Duke of Joyeuse, intimate friend of King Henry III of France, 16th century. He wears the Order of the Holy Spirit from a blue ribbon. Handcoloured lithograph by A.E. after a design by Leon Sault from “” L'Art du Travestissement”” (The Art of Fancy Dress), Paris, c.1880. Sault was a theatre and opera designer and luxury fashion magazine publisher. / Bridgeman Images
FLO4574663: Rhinoceros viper, Bitis nasicornis 1, and carpet python, Morelia spilota 2. Handcoloured copperplate engraving from Bertuch's “” Bilderbuch fur Kinder”” (Picture Book for Children), Weimar, 1798. Friedrich Johann Bertuch (1747-1822) was a German publisher and man of arts most famous for his 12-volume encyclopedia for children illustrated with 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830. / Bridgeman Images
FLO4574810: Nile monitor lizard (Nile varan), Varanus niloticus 1, common basilisk (basil commun), Basiliscus basiliscus 2, and flying lizard (common flying dragon), Draco volans 3. Handcoloured copperplate engraving from Friedrich Johann Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1798. / Bridgeman Images
FLO4575169: Painted mackerel (thazard franc, mackerel variete), Scomberomorus regalis 1, bonito (bonite a dos raye), Sarda sarda 2, bigeye scad (chinchard), Selar crumenophthalmus 3, and pilotfish (pilot fish), Naucrates ductor 4. Handcoloured copperplate engraving from Friedrich Johann Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1802. / Bridgeman Images
FLO4565926: Lavatere tree or royal purple. Coloured copper engraving from a drawing by Isaac Russell from William Baxter's book “English Botanical Phenomenes””, 1834. William Baxter (1788-1871) was the curator of the Oxford Botanical Garden from 1813 to 1854. Tree mallow, Lavatera arborea. Handcoloured copperplate engraving by WE Albutt of a drawing by Isaac Russell from William Baxter's “” British Phaenogamous Botany”” 1834. Scotsman William Baxter (1788-1871) was the curator of the Oxford Botanic Garden from 1813 to 1854. / Bridgeman Images
FLO4575357: Etienne and Joseph Montgolfier's hot-air balloon 1, and brazier a, Professor Jacques Charles's balloon and gondola 2, hydrogen-gas mechanism b, and Jean-Pierre Blanchard with his parachute 3. Handcoloured copperplate engraving from Friedrich Johann Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1802. / Bridgeman Images
FLO4566091: Clematite of hedges. Coloured copper engraving from a drawing by Isaac Russell from William Baxter's book “English Botanical Phenomenes””, 1834. William Baxter (1788-1871) was the curator of the Oxford Botanical Garden from 1813 to 1854. Common traveller's joy, Clematis vitalba. Handcoloured copperplate engraving by I. Whessell of a drawing by Isaac Russell from William Baxter's “” British Phaenogamous Botany”” 1835. Scotsman William Baxter (1788-1871) was the curator of the Oxford Botanic Garden from 1813 to 1854. / Bridgeman Images
FLO4566144: Autumn crocus or saffron with bare flowers. Coloured copper engraving from a drawing by Isaac Russell from William Baxter's book “English Botanical Phenomenes””, 1834. William Baxter (1788-1871) was the curator of the Oxford Botanical Garden from 1813 to 1854. Naked flowering crocus, Crocus nudiflorus. Handcoloured copperplate engraving by I. Whessell of a drawing by Isaac Russell from William Baxter's “” British Phaenogamous Botany”” 1835. Scotsman William Baxter (1788-1871) was the curator of the Oxford Botanic Garden from 1813 to 1854. / Bridgeman Images
FLO4575672: Egyptian gods: Apis 1, Bubastis 2,3, Anubis 4, Canopus 5, and the sacred Ibis 6. Handcoloured copperplate engraving from Bertuch's “” Bilderbuch fur Kinder”” (Picture Book for Children), Weimar, 1805. Friedrich Johann Bertuch (1747-1822) was a German publisher and man of arts most famous for his 12-volume encyclopedia for children illustrated with 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830. / Bridgeman Images