• Scientific American 1882-02-11 1070 visits Scientific American 1882-02-11
  • Scientific American 1882-02-18 1245 visits Scientific American 1882-02-18
  • Scientific American 1882-02-25 931 visits Scientific American 1882-02-25
  • Scientific American 1882-03-04 858 visits Scientific American 1882-03-04
  • Scientific American 1882-03-11 1399 visits Scientific American 1882-03-11
  • Scientific American 1882-03-18 988 visits Scientific American 1882-03-18
  • Scientific American 1882-03-25 1071 visits Scientific American 1882-03-25
  • Scientific American 1882-04-01 1071 visits Scientific American 1882-04-01
  • Scientific American 1882-04-08 803 visits Scientific American 1882-04-08
  • Scientific American 1882-04-22 870 visits Scientific American 1882-04-22
  • Scientific American 1882-04-29 836 visits Scientific American 1882-04-29
  • Scientific American 1882-05-06 882 visits Scientific American 1882-05-06
  • Scientific American 1882-05-13 974 visits Scientific American 1882-05-13
  • Scientific American 1882-05-20 949 visits Scientific American 1882-05-20
  • Scientific American 1882-05-27 1086 visits Scientific American 1882-05-27