Page:The Mathematical Principles of Natural Philosophy - 1729 - Volume 2.djvu/469

 5] having reaon to think, that the Theory of the Moon might by thee means, be made more perfeék 'and compleat than it is at preent; I retarded the publication of the book, 'till I could procure due atifaction by examining obervations on places of the Moon. But finding this to be a work requiring a coniderable time, not only in procuring uch places as are proper, but alo in performing calculations, upon a new method, not yet accommodated to practife by convenient rules, or ailifled by tables; I thought it therefore more convenient for the Book feller, not to Poop the publication of his impreion any longet upon this accounts But that I' may in fomemeafure, atify thoe who are well oonverfant in Sir Mme Nefwton's Principia, (and I could Wifh that none but uch would look over thee papers,) that the aid advertiement was not without ome foundation; and that I may remove any fufpicion that the deign is entirely laid aide, I have put together, altho' in no order, as being done upon a udden refoluti. on, ome of the Propoitions, among many others, that I have by me, which eem chieiiy to be wanting in a Thef ory of the Moon, as it is a peculation A 3 foun<1@d 4