noon
Besides , we must keep our supplies dry . '' They decided to make a small log cabin , and , with this end in view , Bob , the two sailors , and Mr. Carr set off into the woods to hew down trees for this purpose . Captain Spark and Mr. Tarbill remained behind to get the camp in better shape after the storm . The commander also wished to take a sun observation that noon and work out the position of the island . As Bob and his three companions were going through the wood , they were surprised to see several birds of brilliant plumage . Some of them sang sweetly . `` That 's a good sign ! ''