XI. Progressive Development Through The Different Cycles Of Culture

Let:us consider once more the Earth, after its separation from the Moon. It was still enveloped by a volume of air, which presented, however, quite a different aspect from the present air. You must not think that this air inwardly resembled a glowing stove—although its temperature was far higher than is the case now. At that time many substances which are now solid existed within the Earth in a liquid state. An air thickly permeated with gases of the most varied substances, enveloped the Earth, an atmosphere which we might designate as fire-air, a repetition of the former Moon-condition,