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  1. 17th Century fire fighting, artwork
  2. 19th Century amphibious vehicle, artwork
  3. Blastocyst implantation, diagram
  4. Dracula 2
  5. Digestive system, artwork
  6. DNA nucleotides, artwork
  7. DNA nucleotides, artwork
  8. Cephalopd eye, artwork
  9. Pair of Maracas
  10. Evolution of life, artwork
  11. Evolution of the Universe, artwork
  12. Eye anatomy,artwork
  13. Dirigible Beach
  14. Habana Vieja
  15. Human spine, artwork
  16. Human tooth anatomy, diagram
  17. Human tooth anatomy, diagram
  18. Lithosphere, artwork
  19. Map Darwin's Beagle Voyage South America
  20. Mushroom anatomy, diagram
  21. Ovarian cycle, artwork
  22. Pantometer, 16th Century
  23. Pond life
  24. Pond life
  25. Salt dissolution, artwork
  26. Semicircular canal, diagram
  27. Flowing Gesture
  28. Flow XVII
  29. Table of mathematical functions
  30. 19th-century mining machine
  31. Durer's Rhinoceros, 1515
  32. Early electric lamps
  33. F/col STM image of DNA (isometric projection)
  34. Dancing Trees III
  35. Marconi radio apparatus
  36. Amore Picante
  37. Standard lathe
  38. Bordeaux Light
  39. Forms in Harmony
  40. Koi
  41. Tan Owls
  42. A Map of the British and French Dominions in North America, 1755
  43. Antique Map of Belgium and the Netherlands, 1611
  44. Antique Map of Colorado, 1894
  45. Dreamer
  46. Antique Map of Philadelphia, 1875
  47. Cloudy sky with hilly green landscape.
  48. close-up of a plexippus danaus butterfly