Volcanoes were quite numerous in the world's early days, but they're going extinct one by one; the heat inside the earth is growing weaker, the temperature in the globe's lower strata is cooling appreciably every century, and to our globe's detriment, because its heat is its life."
Los volcanes, tan numerosos en los primeros días del mundo, se apagan poco a poco. El calor interno se debilita, y la temperatura de las capas inferiores subterráneas va reduciéndose siglo a siglo en una apreciable proporción, y ello en detrimento de nuestro planeta, pues ese calor es su vida.