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  1. Early astronomical spectroscopy
  2. Tropical Series II
  3. Meander In Violet III
  4. Tricolored Blackbird, Yellow-headed Blackbird, and Bullock's Oriole
  5. Hughes' printing telegraph
  6. Early radiography experiment
  7. Stem cell research
  8. Art of section through human eye showing glaucoma
  9. Goldfish III
  10. Knorr Shells VI
  11. Neck and facial nerves
  12. Cell structure
  13. Livery Stable, Carson City
  14. Heart anatomy, 19th Century illustration
  15. Gene therapy: model of DNA inside a drug
  16. Cut-away artwork of a windmill for grinding corn
  17. Gregor Mendel, Austrian botanist
  18. Descubes Botanical Grass IV
  19. Lamps connected in series
  20. Neutral Iris Sketch II
  21. Ale Tap 1893
  22. Pumping engines, 19th century
  23. Artichoke Sketch
  24. The Old Barn
  25. Mechanics of swallowing, diagram
  26. Nettle groundbug
  27. Fern Foliage III
  28. 'Sense And Sensibility' By Jane Austen
  29. Subway Sphinxes, 2013
  30. A View Of 110th Street In New York City, 1906
  31. Guinea Fowl, from The Farnley Book of Birds, c.1816
  32. Geography of the Heavens VIII
  33. Novogratz Values - Courage
  34. Mid Century - Tree - Elm
  35. City Sketches II
  36. Illustration of a 32 day old human embryo
  37. One Line New York
  38. Cephalopd eye, artwork
  39. Artist's concept of a supernova explosion
  40. Cat Nap II
  41. Horticultural Specimen II
  42. Hippopotamus
  43. Illustration from 'Pride and Prejudice' by Jane Austen
  44. Ferns on Sage VIII
  45. White-eyed Vireo
  46. Tropical Karatas
  47. Chimney-sweep Christmas II, 2001
  48. Allosaurus