Elie de Beaumont, French geologist
Athanasius Kircher, German Jesuit scholar
Carl Ritter, German geographer
Louis Thenard, French chemist
Christian Ehrenberg, German naturalist
Ernst von Dechen, German geologist
Carl Merck, German naturalist
Gustav Froment, French electrical engineer
Xavier Bichat, French anatomist
Comte de Buffon, French naturalist
Louis Agassiz, Swiss-US geologist
Pierre-Paul Riquet, French engineer
Tessie du Motay, French chemist
Andreas Vesalius, Belgian anatomist
Geologist looking for a gem
Gilbert Romme, French politician and mathematician
Martin Lichtenstein, German physician
Claude Adrien Helvetius, French philosopher
James Watt, caricature
Johann Kaspar Lavater, Swiss theologist
Heinrich Dove, Prussian physicist
Frederick William III of Prussia, illustration
Jacques-Louis De Pourtales, Swiss banker
Pierre-Oscar Figuier, French chemist
Johann Kunckel, German chemist
Guillaume Carcel, french inventor
Franklin's kite experiment, illustration
geologist stands on the hill
Aristotle, Ancient Greek philosopher
Prokop Divis, Czech scientist
Geologist holding a hammer and thinks about gem
Geologist holding a hammer and a bag and thinks about mountains
1851 Roderick Impey Murchison geologist
Georges-Louis Le Sage, Swiss physicist
19th Century King of Siam, illustration
19th Century South American Mayoruna man, illustration
19th Century South American Ticuna man, illustration
19th Century South American Juri man, illustration
19th Century Mandinka women, illustration
Tswana man, 19th Century illustration
Southeast Asian man, 19th Century illustration
Heinrich Schliemann, German archaeologist
Mary Anning, British palaeontologist
Luigi Galvani, Italian physician
19th Century Papuan people, illustration
19th Century Tahitian people
Leonard Euler, caricature
Jacques Charles, French balloonist
Augustin Cauchy, caricature
Joseph Priestley, caricature
Karl Friedrich Gauss, caricature
Benjamin Thompson, US physicist, 19th Century illustration
Louis-Urbain-Aubert de Tourny, French architect
Francois Fenelon, French theologian
John Hunter, Scottish surgeon
Jacques-Constantin Perier, French engineer
Salomon de Caus, French engineer
Pavel Yablochkov, Russian
Nikola Tesla, caricature
Francois Sudre, French composer
Sebastien Vauban, French military engineer
Francois Laurent, French aeronaut
Franz Achard, German chemist
Jean-Daniel Colladon, Swiss physicist
Gaspare Aselli, Italian surgeon
Pierre Macquer, French chemist
Dmitri Mendeleev, caricature
Armand-Pierre Seguier, French lawyer
Henri de Ruolz, French industrial chemist
Theophile-Jules Pelouze, French Chemist
Hermann Kolbe, German chemist
Wilhelm Foerster, German astronomer
Herschel's 40 foot telescope, 19th Century illustration
Michael Faraday, British physicist
Karl Etzel, German railway engineer
Charles Lyell, British geologist
Isaac Barrow, English mathematician
Victor Jacquemont, French botanist and geologist
Leonhard Euler, Swiss mathematician
Charles de Freycinet, French statesman
Emile Flourens, French politician
Umberto I of Italy, 19th Century illustration
Leopold II, King of Belgium
Maria Christina, Queen of Spain
Pope Leo XIII, 19th Century illustration
Charles Christofle, French jeweller
Louis Stromeyer, German surgeon, artwork
Hermann von Wissmann, German explorer
Friedrich Jahn, German gymnastics teacher
Volcanic formation, 1767
19th Century Sardinian women, illustration
Emile Pereire, French banker and businessman
Elisabeth de Rossel, French geoscientist
Crawford Long, US surgeon
San hunters, 19th Century illustration
Richard Trevithick, British engineer
Michel Chevreul, French chemist
Francois Magendie, French physiologist
Giovanni Cassini, Italian astronomer
Jean Pierre Flourens, French physiologist
William Wilberforce, British politician
Birch (Betula sp.) trees, 19th C illustration
Cedar (Cedrus sp.) tree, 19th Century illustration
Silver fir trees, 19th C illustration
Ipoh (Antiaris toxicaria), 19th C illustration
Albrecht von Haller, Swiss anatomist, illustration
geologists are digging
Geologists hold a hammer and stands near the ancient utensils
geologists holding a hammer
Claude Berthollet, French chemist
Otto von Guericke, German engineer
Joseph Gay-Lussac, French chemist
Homo naledi male, illustration
Lake Baikal, 19th century
Denis Papin, French physicist
Samuel Clegg, British engineer
Antoine Lavoisier, caricature
Edmond Halley, caricature
Jean Baptiste De La Salle, French priest
Louis Breguet
Albrecht Thaer, German agronomist
Guyton de Morveau, French chemist
Persi Diaconis, US mathematician
Friedrich von Schelling, German philosopher
Joseph Lagrange, caricature
John Fothergill, English physician
Richard Pulteney, British botanist
William Cuming, Scottish physician
Jean-Augustin Barral, French chemist
Richard Owen, British palaeontologist
1684 Thomas Burnet Continental Drift
Niels Bohr, caricature
Andre-Marie Ampere, French physicist
18th Century electricity experiment
The Globe of Crates, historical artwork
11th Century world map, artwork
The Globe of Estakhri, historical artwork
11th Century globe, historical artwork
Joseph Louis Proust, French chemist
Truganini, the 'last Tasmanian woman'
Truganini, the 'last Tasmanian woman', 19th C illustration
August Kekule, German chemist
Georg Riemann, German mathematician
Evariste Galois, French mathematician
Fluorine preparation, 19th Century illustration
Galileo Galilei, Italian astronomer
Arthur Cayley, caricature
Charles Babbage, caricature
David Hilbert, caricature
Ernst Kummer, caricature
Henri Poincare, caricature
Lord Kelvin, caricature
Leon Foucault, French physicist
Amerigo Vespucci, Italian explorer
Konstantin Tsiolkovsky, rocket scientist
Vesuvius erupting, 1794
Georges-Auguste Leschot, French watchmaker
Comet, historical artwork
Martian canals, historical artwork
Christiaan Huygens, caricature
Charles Lyell, caricature
Johann Bode, German astronomer
Xavier Marmier, French author, illustration
Carl Vogt, German naturalist
Piet Joubert, South African military commander
Watt's steam engine, historical artwork
Albrecht Durer, German artist
15th century ship
Bladder and prostate hypertrophy, 19th century
Prostate hypertrophy, 19th century
Reduction of paraphimosis, 19th century
Measuring strabismus, 19th century