40 BIBLIOGRAPHY OF NEWTON 



Trait^ d'Optique. Traduite par Pierre Coste, sur la seconde Edition 

 Angloise. 2 vols. 1720. I2mo. [186 



Seconde Edition franchise beaucoup plus correct que la premiere. 

 Paris, 1722. 4to. [187 



Optique, traduction nouvelle faite par M*** [J. P. Marat], sur la 

 derniere Edition originale, ornee de 21 planches. 2 vols. Paris, 

 1787. 8vo. [188 



Dedicated to the King by M. Beaugee, 'editeur de cet ouvrage,' etc. 



Sir I. Newton's Optik. Uebersetzt und herausgegeben von Wm 

 Abendroth. Portrait. 1898. [189 



Ostwald's 'Klassiker der exakten Wissenschaften.' 2 parts. 



Optical Lectures: 



Optical | Lectures | Read in the | Publick Schools | of the | University 

 of Cambridge, | Anno Domini, 1669. | By the late Sir Isaac 

 Newton, \ Then Lucasian Professor of the Mathematicks. | Never 

 before Printed. | Translated into English out of the Original 

 Latin. \ London : | Printed for Francis Fayram, at the | South 

 Entrance of the Royal Exchange. \ M. DCC. XXVIII. | 8vo. [190 



Collation: Title; Preface [by the translator], dated London, June 29, 

 1727, pp. iii xi; Errata i p. + Opticks, pp. i 212. Sigs. A 6 , B O 8 , 

 P 2 . 13 plates, numbered consecutively i to 13. 



Section I. The Refrangibility of Rays is different ; II. Of the measure of Refractions ; 

 III. Of the Refractions of Planes ; IV. Of the Refractions of Curve Surfaces. 



' It was as long ago as the year 1666, when Sir Isaac Newton first found out his Theory 

 of Light and Colours. Upon Dr Barrow's resigning to him the Professorship of Mathe- 

 maticks at Cambridge, he made A. 1669, this Discovery the Subject of his publick Lectures, 

 in that University. In 1671 he began to communicate it to the world. . . . About the 

 same time he intended to publish his Optical Lectures, wherein these Matters were handled 

 more fully ; together with a Treatise of Series and Fluxions. But the Disputes, which were 

 occasioned, by what he had already suffered to come abroad, deterred him from the Design 



