NEW ELUCIDATION 
OF 
COLOURS, 
ORIGINAL PRISMATIC, ^nd MATERIAL; 
SHOWING 
THEIR CONCORDANCE IN THREE PRIMITIVES, 
YELLOIF, RED, and BLUE; 
AND- 
THE MEANS OF PRODUCING, MEASURING, 
AND MIXING THEM: 
WITH 
SOME OBSERVATIONS on THE ACCURACY of SIR ISAAC NEWTON, 
Who "From tlie whitening uiulistingiiislied lilaze 
Collecting every ray into its kind. 
To the charmed eye educed the gorgeous train 
Of Parent Colours." 
Thomson . 
By JAMES SOWERBY, F.L.S. &c. 
Designer of English Botany, and Exotic Botany; Author of English Fungi, British Miupralogy, 
British MisccUaDy, the Botanical Drasving Book, &c.— No. '2, Me.id PKicp, Lambc h, Surrey. 
Hoution: 
Printed by Richard Taylor and Co. .Shoe-Lane. 
MDCCC-IX. 
