The cold outer air was blowing in through the open door, and the sickly perfume was almost dispelled. Most of the torn aërial rootlets lay already withered amidst a number of dark stains upon the bricks. The stem of the inflorescence was broken by the fall of the plant, and the flowers were growing limp and brown at the edges of the petals. The doctor stooped towards it, then saw that one of the aërial rootlets still stirred feebly, and hesitated. The next morning the strange orchid still lay there, black now and putrescent. The door banged intermittently in the morning breeze, and all the array of Wedderburn's orchids was shrivelled and prostrate. But Wedderburn himself was bright and garrulous upstairs in the glory of his strange adventure. IN THE AVU OBSERVATORY The observatory at Avu, in Borneo, stands on the spur of the mountain. To the north rises the old crater, black at night against the unfathomable blue of the sky. From the little circular building, with its mushroom dome, the slopes plunge steeply downward into the black mysteries of the tropical forest beneath. The little house in which the observer and his assistant live is about fifty yards from the observatory, and beyond this are the huts of their native attendants. Thaddy, the chief observer, was down with a slight fever. His assistant, Woodhouse, paused for a moment in silent contemplation of the tropical night before commencing his solitary vigil. The night was very still. Now and then voices and laughter came from the native huts, or the cry of some strange animal was heard from the midst of the mystery of the forest. Nocturnal insects appeared in ghostly fashion out of the darkness, and fluttered round his light. He thought, perhaps, of all the possibilities of discovery that still lay in the black tangle beneath him; for to the naturalist the virgin forests of Borneo are still a wonderland full of strange questions and half-suspected discoveries. Woodhouse carried a small lantern in his hand, and its yellow glow contrasted vividly with the infinite series of tints between lavender-blue and black in which the landscape was painted. His hands and face were smeared with ointment against the attacks of the mosquitoes. Even in these days of celestial photography, work done in a purely temporary erection, and with only the most primitive appliances in addition to the telescope, still involves a very large amount of cramped and motionless watching. He sighed as he thought of the physical fatigues before him, stretched himself, and entered the observatory.