Even as Colonel Wragge spoke, it seemed to me that this visible darkness began to increase, pouring up thickly out of the ground by the hearth, rising up in sheets and veils, shrouding our eyes and faces. It stole up from below⁠—an awful blackness that seemed to drink in all the radiations of light in the building, leaving nothing but the ghost of a radiance in their place. Then, out of this rising sea of shadows, issued a pale and spectral light that gradually spread itself about us, and from the heart of this light I saw the shapes of fire crowd and gather. And these were not human shapes, or the shapes of anything I recognised as alive in the world, but outlines of fire that traced globes, triangles, crosses, and the luminous bodies of various geometrical figures. They grew bright, faded, and then grew bright again with an effect almost of pulsation. They passed swiftly to and fro through the air, rising and falling, and particularly in the immediate neighbourhood of the Colonel, often gathering about his head and shoulders, and even appearing to settle upon him like giant insects of flame. They were accompanied, moreover, by a faint sound of hissing⁠—the same sound we had heard that afternoon in the plantation.