light has a share of that light, nevertheless the shadows cast by each branch separately are so numerous, as well as those cast by one branch on the others, that finally so much shadow is the result that the light counts for nothing. Hence objects of this kind cannot throw any reflected light on opposite objects.
Reflection on water (206. 207).
206.
PERSPECTIVE.
The shadow or object mirrored in water in motion, that is to say in small wavelets, will always be larger than the external object producing it.
207.
It is impossible that an object mirrored on water should correspond in form to the object mirrored, since the centre of the eye is above the surface of the water.
This is made plain in the figure here given, which demonstrates that the eye sees the surface a b , and cannot see it