V. 1 : General introduction. Research of the earth's crust. The earth's crust and its relation to humanity. Geophysics.
            V. 2 : The origin and development of the human race. The development of the plant world. The development of the animal world.
            V. 3 : Exploration of the universe. The study of the earth's surface.
            V. 4 : Study of the earth's surface (second part). Exploration of the sea. Study of the figure, size and density of the Earth. (The facsimile of the first message of Christopher Colon (Columbus) about the discovery of America in 1492 is enclosed)
            V. 5 : The beginnings of technology. The study of the forces of nature. The use of the forces of nature in home life. The effect of culture on human health. Conclusion