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  1. Salt dissolution, artwork
  2. Engraving of a nautilus and an ammonite
  3. Subway Sphinxes, 2013
  4. Carboniferous landscape
  5. Male Torso Sketch I
  6. Love Birds
  7. Bare-knuckle Boxers
  8. Nativity
  9. Basilica Dome
  10. Grey phalarope, historical artwork
  11. Lung bronchioles
  12. Vintage Golden Gate
  13. Viral throat infection, artwork
  14. Clouds forming the shape of Earth's continents
  15. Kumquat, 1996
  16. Lungs
  17. French Phrases I
  18. Hannibal (247-c.183 BC) crosses the Alps
  19. Sierre to Zinal Mountain Race, The Finish 2012
  20. Breed Studies VI
  21. Medical zodiac, 15th century diagram
  22. Carrigogunnell Castle, Near Limerick, County Limerick, Ireland
  23. Platelet, artwork
  24. Knorr Shells VII
  25. Iris Sketch O'keefe Crop I
  26. Foot bones and ligaments
  27. Artwork of Caudipteryx sp., a bird-like dinosaur
  28. 19th Century internal combustion engine
  29. Rough-legged Hawk
  30. Breed Studies XII
  31. Construction of the Pyramids
  32. Shades of Coral IV
  33. Daybreak
  34. Doodle Fish
  35. Artwork of Mars Polar Lander descending onto Mars
  36. Hummingbird Delight IV
  37. Composite image of the phases of the Moon
  38. Playful Polar Bear, illustration from 'Nature's Wonderland', 1970
  39. Durer's world map, 1515
  40. Rhodopsin protein molecule
  41. Ichthyosaur and prey
  42. Nerve cell, artwork
  43. Shining Sea - Contemporary Painting
  44. TEEN Flutter of Love
  45. Elizabethan England, from 'The Art of Perfume', 1912
  46. School Bus
  47. Chinese armada, artwork
  48. Simple Songbird Sketches I