In the _second_ he treats of the Fabrick of the _Terrestrial Globe_, of the Influences it receives from the Coelestial Bodies, especially the _Sun_ and _Moon_, of both which _Luminaries_ he gives a _Scheme_; of the proportion of the Earth to the Sun and Moon; of the external conformation of the Earth, its Mountains, and their concatenations, decrease and increase, together with the strange transformation thereof. Further, of the Waters encompassing the Earth, and their various Communications by hidden Passages; as also the heighth of Mountains, and of the depth of Seas; the dimension of the _Sicilian Straights_; the Magnetical Constitution of the Earth, its Heterogeneous Nature, Interior Frame, Laboratories, Caves, Channels, &c. In the _third_: Of the Nature of the Ocean, and the diversity of its Motions; of its general Motion from the _East_ to _West_, Currents; Reciprocations, Gulfs, Whirle-pools, Saltness, &c. In the _fourth_: Of the Nature of the Subterraneous _Fire_, its necessity, diffusiveness, food, prodigious Effects through ignivomous Mountains; as also of the Nature of _Air_, and _Winds_, their power and variety; of the general Wind, how and whence generated; of Periodical and Anniversary Winds, and their Causes; as also of the production of Artificial Winds, for refreshment and other advantages. To which he subjoyns a Discourse, tending to prove, That all Meteors owe their Nativity to the Fiers of the Subterraneous World. In the _fifth_: Of the Original of Springs, Rivers, Lakes; various differences and qualities of Waters, and the marks where they are to be met with under Ground; of Waters _Medical_, hot Baths, and their Differences, Causes, Virtues; together with the Wonderful Qualities and Proprieties of some Springs, as to their Colour, Taste, Smell, Weight, Salubrity, Flux and reflux, Petrifying power, &c. In the _sixth_: Of the _Earth_ it self, and the great variety contained in the Womb thereof; of the manifold Productions {111} made therein, by the virtue of Salt and its Auxiliaries, the differences whereof are largly discoursed of, together with the way of extracting the same. In particular of _Saltpetre_, its Generation, Nature, Virtues; of the way of making _Gunpowder_, and the various uses thereof, as also the Nature, Qualities, Preparation, Medicinal and other uses of _Alume_ and _Vitriol_. In the _Seventh_: Of some _Fossils_, as Sand, Gravel, Earths, and their various Differences, Qualities, uses Economical, Chymical, Medical: together with the strange varieties & changes happening in the Earth, and their causes; as also the requisits to _Agriculture_.