• Scientific American 1884-06-28 1093 visits Scientific American 1884-06-28
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  • Scientific American 1890-11-29 1277 visits Scientific American 1890-11-29
  • Scientific American 1891-01-17 994 visits Scientific American 1891-01-17
  • Scientific American 1891-01-24 1044 visits Scientific American 1891-01-24
  • Scientific American 1891-01-31 1329 visits Scientific American 1891-01-31
  • Scientific American 1891-02-07 934 visits Scientific American 1891-02-07
  • Scientific American 1891-02-14 971 visits Scientific American 1891-02-14
  • Scientific American 1891-02-21 1060 visits Scientific American 1891-02-21
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  • Scientific American 1891-04-04 1206 visits Scientific American 1891-04-04
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  • Scientific American 1891-08-15 1302 visits Scientific American 1891-08-15
  • Scientific American 1891-08-22 1078 visits Scientific American 1891-08-22
  • Scientific American 1891-08-29 1153 visits Scientific American 1891-08-29
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  • Scientific American 1891-11-07 959 visits Scientific American 1891-11-07
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  • Scientific American 1892-01-09 1230 visits Scientific American 1892-01-09
  • Scientific American 1892-01-16 962 visits Scientific American 1892-01-16
  • Scientific American 1892-01-23 1042 visits Scientific American 1892-01-23
  • Scientific American 1892-01-30 1617 visits Scientific American 1892-01-30
  • Scientific American 1892-02-06 1139 visits Scientific American 1892-02-06
  • Scientific American 1892-02-13 1216 visits Scientific American 1892-02-13
  • Scientific American 1892-02-20 1041 visits Scientific American 1892-02-20
  • Scientific American 1892-02-27 1222 visits Scientific American 1892-02-27
  • Scientific American 1892-03-05 1366 visits Scientific American 1892-03-05
  • Scientific American 1892-03-12 1108 visits Scientific American 1892-03-12
  • Scientific American 1892-03-19 1085 visits Scientific American 1892-03-19
  • Scientific American 1892-03-26 1088 visits Scientific American 1892-03-26
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  • Scientific American 1892-04-23 1012 visits Scientific American 1892-04-23
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