In the writer’s mind there is no doubt but the Sun is as favorable in condition for animal and vegetable life as the Earth, and has both in proportional greater variety and species. Nature having no limit to designs, uses no duplicates, never repeats herself in anything. No two grains of seed, no two snow flakes, are ever just alike. A million bushels of peas will have no two alike, yet every one has its individuality as a pea. Man cannot discriminate one blackbird from another in a flock, but to the birds they are as individual as mankind to each other. For these reasons it is easy to see that every planet may be peopled with different varieties of animal and vegetable life as it is to find the variations in different countries of the Earth. While the climate of the Sun may be hotter than that of the Earth, Nature can adapt itself to any condition of heat or cold. Thus far the argument has been chiefly in considering the influence of heat by friction on planetary surfaces. Later this influence will be briefly taken up to demonstrate its interior effect in producing earthquakes and volcanoes. For a diversion, we will for a while consider the effect of centrifugal force on the Earth. The Earth gives many manifestations of said force in the shape of the continents, courses of rivers, outlets of bays and ranges of mountains. North America gradually swings to the east as it approaches the Equator; South America, at the Equator, bulges most to the east. The mountain ranges, the Rocky, Sierra Nevada and Cordilleras, in North America, the Andes, in South America, forming a barrier against the further encroachment of the Pacific Ocean. The West Coast of Africa is protected from the Atlantic largely by the mountains of Morocco, including the Black and White, running south, somewhat protecting Senegambia, and then the Kong, with other mountain ranges in upper and lower Guinea, stop the encroachment on line of Gulf of Guinea. In Asia, Hindustan has the Ghant Mountains for a barrier, while another range of mountains holds the Peninsula of Malacca in place. It will be plainly seen that all these points of countries lean toward the Equatorial center of motion. The islands of Oceanica, strung out on the line of the Equator, also show the effect of the Earth’s revolution. The Island of Australia is apparently a new production in embryo of a new continent in future connection with some of the large adjacent islands, and ultimately of most of the island groups of Oceanica. The same result is likely to follow with the Greater and Lesser Antilles.