• Scientific American 1881-11-05 1106 visits Scientific American 1881-11-05
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  • Scientific American 1881-12-10 1092 visits Scientific American 1881-12-10
  • Scientific American 1881-12-31 1202 visits Scientific American 1881-12-31
  • Scientific American 1882-01-07 1083 visits Scientific American 1882-01-07
  • Scientific American 1882-01-14 1128 visits Scientific American 1882-01-14
  • Scientific American 1882-01-21 1300 visits Scientific American 1882-01-21
  • Scientific American 1882-01-28 1397 visits Scientific American 1882-01-28
  • Scientific American 1882-02-04 1079 visits Scientific American 1882-02-04
  • Scientific American 1882-02-11 1194 visits Scientific American 1882-02-11
  • Scientific American 1882-02-18 1348 visits Scientific American 1882-02-18
  • Scientific American 1882-02-25 1015 visits Scientific American 1882-02-25
  • Scientific American 1882-03-04 950 visits Scientific American 1882-03-04
  • Scientific American 1882-03-11 1482 visits Scientific American 1882-03-11
  • Scientific American 1882-03-18 1063 visits Scientific American 1882-03-18
  • Scientific American 1882-03-25 1141 visits Scientific American 1882-03-25
  • Scientific American 1882-04-01 1176 visits Scientific American 1882-04-01
  • Scientific American 1882-04-08 879 visits Scientific American 1882-04-08
  • Scientific American 1882-04-22 947 visits Scientific American 1882-04-22
  • Scientific American 1882-04-29 925 visits Scientific American 1882-04-29
  • Scientific American 1882-05-06 970 visits Scientific American 1882-05-06
  • Scientific American 1882-05-13 1071 visits Scientific American 1882-05-13
  • Scientific American 1882-05-20 1043 visits Scientific American 1882-05-20
  • Scientific American 1882-05-27 1162 visits Scientific American 1882-05-27
  • Scientific American 1882-06-03 956 visits Scientific American 1882-06-03
  • Scientific American 1882-06-10 1579 visits Scientific American 1882-06-10
  • Scientific American 1882-06-17 1012 visits Scientific American 1882-06-17
  • Scientific American 1882-06-24 1022 visits Scientific American 1882-06-24
  • Scientific American 1882-07-01 1094 visits Scientific American 1882-07-01
  • Scientific American 1882-07-08 941 visits Scientific American 1882-07-08
  • Scientific American 1882-07-15 959 visits Scientific American 1882-07-15
  • Scientific American 1882-07-22 1126 visits Scientific American 1882-07-22
  • Scientific American 1882-07-29 965 visits Scientific American 1882-07-29
  • Scientific American 1882-08-05 1095 visits Scientific American 1882-08-05
  • Scientific American 1882-08-12 1057 visits Scientific American 1882-08-12
  • Scientific American 1882-08-19 1126 visits Scientific American 1882-08-19
  • Scientific American 1882-08-26 1137 visits Scientific American 1882-08-26
  • Scientific American 1882-09-02 1095 visits Scientific American 1882-09-02
  • Scientific American 1882-09-09 1068 visits Scientific American 1882-09-09
  • Scientific American 1882-09-16 1009 visits Scientific American 1882-09-16
  • Scientific American 1882-09-23 1395 visits Scientific American 1882-09-23
  • Scientific American 1882-09-30 1188 visits Scientific American 1882-09-30
  • Scientific American 1882-10-07 1274 visits Scientific American 1882-10-07
  • Scientific American 1882-10-14 1276 visits Scientific American 1882-10-14
  • Scientific American 1882-10-21 2304 visits Scientific American 1882-10-21
  • Scientific American 1882-10-28 1189 visits Scientific American 1882-10-28
  • Scientific American 1882-11-04 1044 visits Scientific American 1882-11-04
  • Scientific American 1882-11-11 1216 visits Scientific American 1882-11-11
  • Scientific American 1882-11-18 1230 visits Scientific American 1882-11-18
  • Scientific American 1882-11-25 1176 visits Scientific American 1882-11-25
  • Scientific American 1882-12-02 1142 visits Scientific American 1882-12-02
  • Scientific American 1882-12-09 1120 visits Scientific American 1882-12-09
  • Scientific American 1882-12-16 1203 visits Scientific American 1882-12-16
  • Scientific American 1882-12-23 1253 visits Scientific American 1882-12-23
  • Scientific American 1882-12-30 1148 visits Scientific American 1882-12-30
  • Scientific American 1884-01-05 1308 visits Scientific American 1884-01-05
  • Scientific American 1884-01-12 1330 visits Scientific American 1884-01-12
  • Scientific American 1884-01-19 1159 visits Scientific American 1884-01-19
  • Scientific American 1884-01-26 1183 visits Scientific American 1884-01-26
  • Scientific American 1884-02-02 1082 visits Scientific American 1884-02-02
  • Scientific American 1884-02-09 1546 visits Scientific American 1884-02-09
  • Scientific American 1884-02-16 1370 visits Scientific American 1884-02-16
  • Scientific American 1884-02-23 1188 visits Scientific American 1884-02-23
  • Scientific American 1884-03-01 1207 visits Scientific American 1884-03-01
  • Scientific American 1884-03-08 1100 visits Scientific American 1884-03-08
  • Scientific American 1884-03-15 1155 visits Scientific American 1884-03-15
  • Scientific American 1884-03-22 1082 visits Scientific American 1884-03-22
  • Scientific American 1884-03-29 1090 visits Scientific American 1884-03-29
  • Scientific American 1884-04-05 1765 visits Scientific American 1884-04-05
  • Scientific American 1884-04-12 1089 visits Scientific American 1884-04-12
  • Scientific American 1884-04-19 1093 visits Scientific American 1884-04-19
  • Scientific American 1884-04-26 1165 visits Scientific American 1884-04-26
  • Scientific American 1884-05-03 1104 visits Scientific American 1884-05-03
  • Scientific American 1884-05-10 1123 visits Scientific American 1884-05-10
  • Scientific American 1884-05-17 1848 visits Scientific American 1884-05-17
  • Scientific American 1884-05-24 1084 visits Scientific American 1884-05-24
  • Scientific American 1884-05-31 1245 visits Scientific American 1884-05-31
  • Scientific American 1884-06-07 1376 visits Scientific American 1884-06-07
  • Scientific American 1884-06-14 1117 visits Scientific American 1884-06-14
  • Scientific American 1884-06-21 1161 visits Scientific American 1884-06-21