I306

One Body reflecting light upon another, does not communicate its Colour to that other Body, such as it appears in it self; but tinges it with a mixture of several Colours resulting from different parts of the first Body, upon the same Point of the second. For Example, let A be a Yellow Colour, [Tab. 1 Fig. 7.] reflected upon the part O of the Spherical Surface C O E, and let the Blue Colour B have its Reflex upon the same Point O; by the mixture of these two Colours in O, the Reflex will be converted into a Green if the Ground be white; it appearing from Experience, that Blue and Yellow mingled together do form a very beautiful Green.