36 BIBLIOGRAPHY OF NEWTON 



hitherto delayed the Printing, and should still have delayed it, had not the importunity of 

 Friends prevailed upon me ... 



In a Letter written to Mr Leibnitz in the year 1676, and published by Dr Wallis, I 

 mentioned a Method by which I had found some general Theorems about squaring Curvi- 

 linear Figures . . . And some years ago I lent out a Manuscript containing such Theorems, 

 and having since met with some Things copied out of it, I have on this occasion made it 

 Publick . . . And I have joined with it another small Tract concerning the Curvilinear 

 Figures of the Second Kind, which was also written many years ago, and made known to 

 some Friends, who have solicited the making it publick.' 



Opticks : | or, a | Treatise | of the Reflections, Refractions, \ Inflections 



and Colours \ of | Light. | The Second Edition, with Additions. \ 



By Sir Isaac Newton, Knt. | London : | Printed by W. Bowyer 



for W. Innys at the | Prince's Arms in St. Paul's Church- Yard. 



1717. | 8vo. [175 



Collation: Title, Advertisement [to First Edition, dated April i, 1704], 



Advertisement II. [dated July 16, 1717], Corrigenda, 4 11. + pp. [i] 



[382] + Catalogue of Books printed for and sold by Will. Innys, at the 



Prince's- Arms in St. Paul's Church-yard, i 1. Sigs. A 4 B Bb 8 . 12 



plates, newly engraved to suit the size of the work : Book I. part i, 



Tab. i v, after p. 98; Book I. part 2, Tab. i iv, after p. 166; 



Book II. Tab. i and n, after p. 290 ; Book III. Tab. i, after p. 382. 



' In this Second Edition ... I have omitted the Mathematical Tracts published at the 

 End of the former Edition, as not belonging to the subject. And at the End of the Third 

 Book I have added some Questions,' &c. Newton's Advertisement II. 



Opticks : | or, a | treatise | of the | Reflections, Refractions, \ Inflections 

 and Colours \ of | Light. | The Second Edition, with Additions. \ 

 By Sir Isaac Newton, Knt. | London : | Printed for W. and J. 

 Innys, Printers to the | Royal Society, at the Prince' s- Arms in 

 St. Paul's | Church- Yard. 1718. | 8vo. [176 



Collation : As in 1717 issue. 



In addition to a new title-page, the first two pages of the Advertisement to the first 

 edition have been re-imposed, slight alterations having been made in this re-issue. 



Opticks : | or, a | treatise of the | Reflections, Refractions, \ Inflections 

 and Colours \ of | Light. | The Third Edition, Corrected. \ By Sir 



