Page:The Mathematical Principles of Natural Philosophy - 1729 - Volume 2.djvu/467



The LAWS of the MOON's MOTION.

IN justice to the editor of this translation of Sir Isaac Newton's Principia, it is pro- per to acquaint the reader, that it was with my consent, he published an advertisement, at the end of a volume of miscellanies, concerning a small tract which I intended to add to his book by way of appendix; my design in which was to deliver some general ele- mentary propositions, serving, as thought, to explain and demonstrate the truth of the rules in Sir Isaac Newton's Theory of the Moon.