SINOPSIS DEL LIBRO

<p>Nature displays her wonders not only in the starry heavens or in the boundless variety of animal and vegetable life on the surface of our earth. In the dark regions underground she likewise shows us much that is remarkable or beautiful, or carries on gigantic operations, which are sometimes beneficent and sometimes disastrous to mankind.<br>There lie concealed the mysterious laboratories of fire, which reveal to us their existence in earthquak...Seguir leyendo