In essence, over an hour's time a single human being consumes all the oxygen found in 100 liters of air, at which point that air has become charged with a nearly equal amount of carbon dioxide and is no longer fit for breathing.
En efecto, cada hombre consume en una hora el oxígeno contenido en cien litros de aire, y el aire, cargado entonces de una cantidad casi igual de ácido carbónico, se hace irrespirable.