174. As regards the atmospheres, which are called ethers and airs, they are alike in both worlds, the spiritual and the natural, with the difference only that they are spiritual in the spiritual world, and natural in the natural world. The former are spiritual, because they have their form from the sun which is the first proceeding of the Divine Love and Divine Wisdom of the Lord, and from Him receive within them the Divine fire which is love, and the Divine light which is wisdom, and carry these down to the heavens where the angels dwell, and cause the presence of that sun there in things greatest and least. The spiritual atmospheres are divided substances, that is, least forms, originating from the sun. As these each singly receive the sun, its fire, distributed among so many substances, that is, so many forms, and as it were enveloped by them, and tempered by these envelopments, becomes heat, adapted finally to the love of angels in heaven and of spirits under heaven. The same is true of the light of that sun. In this the natural atmospheres are like spiritual atmospheres, that they also are divided substances or least forms originating from the sun of the natural world; these also each singly receive the sun and store up its fire in themselves, and temper it, and carry it down as heat to the earth, where men dwell. The same is true of natural light.