The first sense is sight: and the sensoria or organs of sight are the nerves of the brain and the eyes. Now sight is primarily perception of colour, but along with the colour it discriminates the body that has colour, and its size and form, and locality, and the intervening space and the number Nemes., ch. 71.: also whether it is in motion or at rest, rough or smooth, even or uneven, sharp or blunt, and finally whether its composition is watery or earthy, that is, wet or dry.