Two on mountains, and the type of their formation.
Two on the form of the earth's surface, on the connection of continents, and the elevation of soil over ravines.
Three on the sea as a globular fluid surrounding the earth.
Ten on the atmosphere—as an elastic fluid surrounding the earth, and on the distribution of heat.
One on the geographic distribution of organized matter in general,
Three on the geography of plants.
Three on the geography of animals; and
Two on the races of men.
These lectures are what is known as the Cosmos, and present a scientific picture of the world—of infinite diversity in unity; of ceaseless motion in the eternal grasp of law.
These lectures contain the result of his investigation, observation and experience; they furnish the connection between phenomena; they disclose some of the changes through which the earth has passed in the countless ages; the history of vegetation, animals and men; the effects of climate upon individuals and nations; the relation we sustain to other worlds, and demonstrate that all phenomena, whether insignificant or grand, exist in accordance with inexorable law.