The answer is UNDER The corresponding square is BOARDWALK by Rose Koch ---------------------- The numbers are all X-ray emission lines, either the Ka or Kb lines of specific elements. If a Ka line of an element is listed, the first letter of the element symbol is used. Kb indicates that the second letter should be used. 17.47934 Mo Ka 1.83594 Si Kb 82.576 Tl Kb 12.649 Kr Ka 59.31824 W Ka 7.64943 Co Kb 63.0005 Os Ka 48.697 Gd Kb Milkwood 26.0955 Cd Kb 8.90529 Cu Kb 13.3953 Rb Ka 69.310 Re Kb 11.7262 As Kb 25.2713 Sn Ka Duress 1.48670 Al Ka 15.8357 Sr Kb 5.94671 Cr Kb 41.5422 Eu Ka 4.0906 Sc Ka 57.532 Ta Ka Arrest 63.234 Hf Kb 24.2097 In Ka 83.78 Rn Ka 33.624 Xe Kb Fire 74.9694 Pb Ka 22.16292 Ag Ka 97.46 Fr Kb Par Milkwood, Duress, Arrest, Fire, and Par all clue UNDER. --------- How to solve it? Do a web search on any of the number, realize that they're only in two columns, and figure out that might be which letter of the symbol to use.