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In the second he treats of the Fabrick of the Terrestrial Globe, of the Influences it receives from the Cœlestial 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 of 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 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 Fires 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, Vertues; together with the wonderful Qualities and Properties 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 Produ-
