PRINCIP1A 9 



Ten copies are accounted for by Brewster (II. 383) 

 I in Trinity College Library. 



i in Queens' College Library, the copy given by Newton to J. F. Fauquier. 

 i in the Royal Society Library, presented by Martin Folkes in the name of the 



President, 31 March, 1726. 



I in the Oxford Observatory, the copy given to Bradley. 

 6 sent to Fontenelle, for the Academy of Sciences, for himself, and for the principal 



mathematicians in Paris. 



There are also two copies in the British Museum ; one in the King's Library, with the 

 arms of George I. on the cover ; one in the Grenville Library, with the bookplate of Sir 

 John Buckworth. 



This is the last edition revised by the Author. Roger Cotes died in 1716, so that a new 

 editor had to be found, and Newton entrusted Henry Pemberton with the work of passing 

 the third edition through the press. Printing commenced either at the end of 1723 or the 

 beginning of 1724, and the work completed in February, 1726, and in March, or shortly 

 afterwards, published. On the authority of John Conduitt, Pemberton received two hundred 

 guineas from Newton for the work. 



Many alterations were made, and Halley's verses were printed nearly in the form in which 

 they appeared in the first edition. Some of the differences between the second and third 

 editions are printed in Brewster's Life of Newton (1855, pp. 549 556, or 1860, II. 304 

 309, 314 319) from a list made by the late Professor John Couch Adams. 

 The Royal Privilege is as follows : 



GEORGE R. 



Whereas Our Trusty and well beloved William Innys and John Innys of Our City of 

 London, Booksellers, have by their Petition represented unto Us, that they have 

 at great Charge and Expense printed a new and correct Edition of a Book 

 intituled, Philosophies Naturalis Principia Mathematica ; Auctore Isaaco Newtono 

 Eq. Aur. Editio tertia aucta 6 emendata : And the sole Right and Title of the 

 Copy of the same, being vested in the said William Innys and John Innys, they 

 have humbly besought Us to grant them Our Royal Privilege and License, for 

 the sole printing and publishing thereof for the Term of fourteen Years : We 

 being willing to give all due Encouragement to Works of this Nature, which tend 

 to the Advancement of Learning, are graciously pleased to gratify them in their 

 Request, and do, by these Presents, agreeable to the Statutes in that Behalf made 

 and provided, for Us, Our Heirs and Successors, give and grant unto them the 

 said William Innys and John Innys, their Executors, Administrators and 

 Assigns, Our Royal License for the sole printing and publishing the said Book 

 intituled Philosophiae Natut alis Principia Mathematica ; Auctore Isaaco Newtono^ 

 Equite Aur. for the term of fourteen Years from the date hereof, strictly for- 

 bidding all Our Subjects within Our Kingdoms and Dominions to reprint the 

 same, either in the like or in any other Volume or Volumes whatsoever, or to 

 Import, Buy, Vend, Utter or Distribute any Copies thereof reprinted beyond the 

 Seas, during the aforesaid term of fourteen Years, without the Consent or 

 Approbation of the said William Innys and John Innys, their Heirs, Executors, 

 and Assigns under their Hands and Seals first had and obtained, as they shall 

 answer the contrary at their Peril. Whereof Our Commissioners and other 

 Officers of Our Customs, the Master Wardens and Company of Stationers, are to 

 take Notice that due Obedience be rendered thereunto. Given at our Court at 

 St. James's the twenty fifth Day of March, 1726, in the twelfth Year of Our 

 Reign. By his Majesty's Command, TOWNSHEND. 



In 1739 the first volume of an edition of the Principia, with commentary by T. Le Seur 

 and F. Jacquier, was published at Geneva (see No. 14), and this edition was afterwards re- 

 edited by J. M. F. Wright, and published at Glasgow in 1822 (see No. 17). 



