Astronomy Explained Upon Sir Isaac Newton's Principles

Transcriber’s Note

This book uses a number of astronomical symbols, including signs of the Zodiac (♈, ♉, ♊, ♋, ♌, ♍, ♎, ♏, ♐, ♑, ♒, ♓), symbols for planets (☿, ♀, ⊕, ♂, ♃, ♄) and for the sun and moon (☉, 🌑︎). If these characters do not display correctly, you may have to use an alternative font, such as Arial Unicode MS or DejaVu.

When italics were used in the origina...