midnight
Our suspicions regarding the honesty of Leith made the strange appearance of the figure on the table of stone more perplexing than it would have been under ordinary circumstances . Leith had asserted that the island was uninhabited , yet we were not inclined to rush to him with the news of the discovery . We felt that it was another of the small discoveries that made us pile up suspicions against the big bully at the head of the party . We had no proof of the midnight visitor , and the story of his sudden disappearance while we watched below would only provoke an unbelieving grin from Leith , and an idiotic laugh from the foolish old Professor . `` Better keep it to ourselves , '' growled Holman . `` For the present at any rate , '' I remarked . `` If Leith knows that there are others upon the island , and if those others are friendly to him , it will only make him more careful of his actions if we tell what we have seen to-night . ''