The effect of the potion on a person in full health is very different; it stimulates and excites, and is altogether prejudicial; and although it would rather do good than harm to a weakly person, its great virtues are only shown when taken by a man in his last moments. Where it is desirable merely to calm or to rouse, there are other and more effectual preparations. XVII. INTERNAL CITIES. SUNSHINE PICTURES. "Let the great be blessed for the joy they cause to fall on the world like refreshing dews." There are two seasons in our world--the one called "moderate," the other "extreme." In the extreme season the heat is far beyond the most powerful heat prevailing in your tropics. Special precautions are then necessary to preserve the health of the people. None are allowed to expose themselves to the sun during the greater part of the day; a cooling regimen is enjoined, and animal food is forbidden for a certain period. In both seasons the light by day is intense; its nearest approach to colour is a warm, bright, golden hue, not the cold, white, greyish hue of your climates; and its red shades are sufficient to light our caverns and passages through the rocks to a certain distance. Those who confer large benefits on the world are naturally entitled to enjoy a portion of the wealth and well-being they have successfully laboured to increase. This truth I constantly bore in mind, and in spacious galleries perforating the rocks I built the Trombetski, or Internal Cities, for the especial use of those whose superior intelligence had been occupied for the good of the world. Here, sheltered from the scorching rays of the sun, are the palace residences of the higher classes during the extreme season. These galleries serve also to shorten distances between remote parts of the external world. With their streets and passages they form of themselves cities, with scarcely less movement than in those without. Light is admitted through occasional apertures--some natural, some made by man. It is not as vivid as that of the external world, but subdued and beautifully soft, is ample indeed for all purposes by day, like the pale red of the shade in the external world. Even at night artificial light is not ordinarily required in the open air, the shade of the red light of night being sufficient. Both sea and fresh water in abundance is brought to every part of the internal cities, which abound in waterfalls and fountains, nothing being omitted that may contribute to beauty, health, or comfort.