OPTICKS= 



O R, A 



TREATISE 



OF THE 



REFLEXIONS, REFRACTIONS, 

 INFLEXIONS and COLOURS 



LI G H T. 



ALSO 



Two TREATISES 



O F TH E 



SPECIES and MAGNITUDE 



OF 



Curvilinear Figures. 



LONDON, ^^ 



Printed for Sam. Smith^ and Benj. Walford. 



Printers to the Royal S ociety , at the Vrlnct's Arms in 

 St. ?Aulh Church-yard. MDCCIV- : : . . . ^^ 



Nos. 3249-50 ( ?^a^e 162). :, y, 

 Titlepage of the very rare first edition. 



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