Charts. Disappointment Group, Tuamotu Archipelago,' south Pacific Ocean, by U. S. Ex. Ex., 1839, natural scale 1:141,789; Pukaruha or Serle Island, Tuamotu Archipelago, by U. S. Ex. Ex., 1839, natural scale 1:139,825; Reao or Clermont-Tonnere, Tuamotu Archipelago, by U. S. Ex. Ex., 1839, natural scale 1:139,690; chart 78.