At that moment Fletcher was seized by an unaccountable panic. He was afraid of something; he did not know what it was, but he knew, he felt absolutely certain, that some danger, no vague calamity, no distant misfortune, but some definite physical danger was hanging over him and quite close to him--something from which it would be necessary to run away, and to run fast in order to save his life. And yet there was no sign of danger visible, for in front of him was the motionless oily sea, and behind him was the empty and silent plain. It was then he noticed that the caterpillars were fast disappearing, as if into the earth: he was too far off to make out how. He began to run along the coast. He ran as fast as he could, but he dared not look round. He ran back from the coast to the plain, from which a white mist was rising. By this time every single caterpillar had disappeared. The whistling noise continued and grew louder. At last he reached the wood and bounded on, trampling down long trailing grasses and tangled weeds through the thick, muggy gloom of those endless aisles of jungle. He came to a somewhat open space where there was the trunk of a tree larger than the others; it stood by itself and disappeared into the tangle of creepers above. He thought he would climb the tree, but the trunk was too wide, and his efforts failed. He stood by the tree trembling and panting with fear. He could not hear a sound, but he felt that the danger, whatever it was, was at hand. It grew darker and darker. It was night in the forest. He stood paralysed with terror; he felt as though bound hand and foot, but there was nothing to be done except to wait until his invisible enemy should choose to inflict his will on him and achieve his doom. And yet the agony of this suspense was so terrible that he felt that if it lasted much longer something must inevitably break inside him . . . and just as he was thinking that eternity could not be so long as the moments he was passing through, a blessed unconsciousness came over him. He woke from this state to find himself face to face with one of the office messengers, who said to him that he had been given his number two or three times but had taken no notice of it. Fletcher executed his commission and then went upstairs to his office. His fellow-clerks at once asked what had happened to him, for he was looking white. He said that he had a headache and was not feeling quite himself, but made no further explanations.