Helpfully for rewilders, European law is on their side.

hard X-rays

Their vision is therefore, in fact, dichromic; all their compound colours are resolvable into two elements only instead of three.

When small opaque particles exist in the transparent media, they may cast their shadow on the retina so as to give rise to images which are projected outwards by the mind into space, and thus appear to exist outside of the body. Such phenomena are termed entoptic.