Represents the _Pleides_, a well known Knot of Stars in the Sign _Taurus_, as they appeared to me thro' a one Foot reflecting Telescope: And _Plate_ XVI. is a View of the _Persides_, another surprizing Knot of Stars in the Constellation _Perseus_, exactly as they appear through a Tube of two convex Glasses. There are also other luminous Spaces in the starry Regions, not unlike the Milky Way, which I have had no Opportunity of observing; such as the _Nebeculæ_, near the South Pole, called by the Seamen _Magellanic_ Clouds; and which likewise viewed through Telescopes, present us with little _Nebulæ_, and small Stars interspersed: One of these Kind is situated between _Hydrus_ and _Dorado_; and another, something less than this, betwixt _Hydrus_ and the _Toucan_. Now admitting the Breadth of the _Via Lactea_ to be at a Mean but nine Degrees, and supposing only twelve hundred Stars in every square Degree, there will be nearly in the whole orbicular Area 3,888,000 Stars, and all these in a very minute Portion of the great Expanse of Heaven. What! a vast Idea of endless Beings must this produce and generate in our Minds; and when we consider them all as flaming Suns, Progenitors, and _Primum Mobiles_ of a still much greater Number of peopled Worlds, what less than an Infinity can circumscribe them, less than an Eternity comprehend them, or less than Omnipotence produce and support them, and where can our Wonder cease? [Illustration: Plate XV.] [Illustration: Plate XVI.] In this Place perhaps I ought not to pass over the astonishing Phenomenon of several new Stars, _&c._ which have frequently appeared, and soon again vanished, in the same Point of the Heavens. But as the Business of this Theory is rather to solve the general, than any particular Phænomenon, I shall only here by way of Note subjoin a Table of such as has been regularly observed, and by whom they were first discovered. _A Table of several new Stars_, Nebulæ, _and double Stars_, &c. _Nomina Stellarum._ _Observationum._ _Septima Pleiadum_ { Lost after the burning of _Troy_, { but now returned; see { _Ricciolus_. A new Star appeared in _Cassiopea_, } _Anno Dom._ 945, bright as nearly in the same Place with that } _Jupiter_; see _Ricciolus_. of 1572. The new Star in _Cassiopea's_ Chair. { Bright as _Venus_, from _November_ { 1572 to _March_ 1574.