Farther, St. Basil, St. Ambrose, Damascene, Cassiodorus, Genebrardus, Suarez, Tannerus, Hurtadus, Oviedus, Tellez, and Borrus, distinguished the Universe as divided into three Portions, or Heavens. Or, as _Cajetan_. _Tho. Aquinas._ The first called the Empyræum, Watery, The second supposed Sidereal, Sidereal, Watery, And the last of all, Aerial. Aerial, Sidereal. Again, St. _Athanasius_ adds to those of the fix'd Stars, the Planets, and the Air, that of the _Empyræum_, and makes in all four Heavens. But as the Number of the Heavens thus increases, and will become subdivided in the subsequent Account of them, to give you a better Idea of the Order of these celestial Portions of the mundane Space, it will not be amiss to form what remains of them into regular Sections of their proper Spheres and Systems. See _Plate_ III. in which Figure, the first represents a Section of the cosmical Theory of _Oviedus_ and _Ricciolus_: Both consisting of five Heavens, _viz._ By _Oviedus_, By _Ricciolus_, sidereal and solid. sidereal and fluid. The fixed Stars, A _Empyræum_, G _Saturn_, B The Water, F _Jupiter_, C The fixed Stars, A _Sol_, with ♂ ☿ and ♀ included, D The Planets, H The Moon. E The Air. I _Fig._ II. represents that of venerable _Bede_ and _Rabanus_, _viz._ of Seven Heavens. And according to _Bede_ But by _Rabanus_, composed of The Air, P The Atmosphere, The Æther, O The upper Air, _Olympus_, N The inferior Fire, The Element of Fire, M The superior Fire, The Firmament, A Sphere of the fixed Stars, The Angelical Region, L The Crystalline Heaven, Realm of the Trinity. K The _Empyræum_. Fig. III. Represents the Hypotheses of _Eudoxus_, _Plato_, _Calippus_, _Cicero_, _Riccius_, _Philo_, _Remigius_, _Aben-Ezra_, _Carthusianus_, _Lyranus_, _Tostatus_, _Brugensis_, _Orontius_, _Cremoninus_, _Philalethæus_, _Amicus_, and _Ruvius_; also the _Babylonians_ and _Egyptians_. Consisting of Eight Heavens, All Sidereal, _viz._ The Sphere of the fix'd Stars, and those of the Seven Planets. Fig. IV. is that of _Macrobius_, _Haly Alpetragius_, _Rabbi-Josue_, _Rabbi Moyses_, _Scotus_, _Abraham Zagutus_, _Sacroboscus_, _Claromontius_, _Avigra_, and _Arraiga_. All of Nine Heavens, Comprehend a _Primum Mobile_ Q, or, according to _Arriaga_, a solid _Empyræum_. The Sphere, of fixed Stars A, and the seven Regions of the solar Planets.