• Scientific American 1915-01-16 1165 visits Scientific American 1915-01-16
  • Scientific American 1915-01-23 2342 visits Scientific American 1915-01-23
  • Scientific American 1915-01-30 1261 visits Scientific American 1915-01-30
  • Scientific American 1915-04-17 1192 visits Scientific American 1915-04-17
  • Scientific American 1915-05-15 1259 visits Scientific American 1915-05-15
  • Scientific American 1915-05-22 1485 visits Scientific American 1915-05-22
  • Scientific American 1915-05-29 1298 visits Scientific American 1915-05-29
  • Scientific American 1915-06-12 1160 visits Scientific American 1915-06-12
  • Scientific American 1915-06-19 1265 visits Scientific American 1915-06-19
  • Scientific American 1915-06-26 1217 visits Scientific American 1915-06-26
  • Scientific American 1917-04-28 1424 visits Scientific American 1917-04-28
  • Scientific American 1918-04-27 1589 visits Scientific American 1918-04-27
  • Scientific American 1918-06-01 1294 visits Scientific American 1918-06-01
  • Scientific American 1918-06-15 1442 visits Scientific American 1918-06-15
  • Scientific American 1918-06-22 1175 visits Scientific American 1918-06-22
  • Scientific American 1918-06-29 1324 visits Scientific American 1918-06-29
  • Scientific American 1918-10-19 1313 visits Scientific American 1918-10-19
  • Scientific American 1919-03-15 1268 visits Scientific American 1919-03-15
  • Scientific American 1919-06-14 1122 visits Scientific American 1919-06-14