Preface. -- Introduction. -- Book I. [Meteors, halo, rainbow, mock sun, etc.] -- Book II. [The nature of air. Thunder and lightning] -- Book III. on forms of water -- Book IV, containing a discussion of snow, hail and rain. [The Nile] -- Book V, treating of winds and movement of the atmosphere -- Book VI, treating of earthquakes -- Book VII, treating of comets -- Notes by Sir A. Geikie -- Translator's notes on "air", quotations, and Gercke's readings -- Index.