Excerpt: ...all my power of vision; I gasped for breath; I concentrated upon it all the power of my soul, as upon the last scintillation of light I was ever destined to see: and then I was to be lost forever in Cimmerian and tenebrous shades. A wild and plaintive cry escaped my lips. On earth during the most profound and comparatively complete darkness, light never allows a complete destruction and extinction of its power. Light is so diffuse, so subtle, that it permeates everywhere, and whatever little may remain, the retina of the eye will succeed in finding it. In this place nothing