Remarkable Effects On The Visual Nerves By Looking Through

differently-coloured Glasses.

After looking through green spectacles, the white paper of a book

will, on first taking them off, appear to have a blush of red; and

after looking through red glasses, a greenish cast. This seems to

intimate a relation between green and red, not yet explained.

Refraction Of Light Remarkable Properties In Certain Plants facebooktwittergoogle_plusredditpinterestlinkedinmail