Light and Water e-bog

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. In the first chapter is explained the formation of the image in perfectly still water. In the second the water is supposed to be rippled, and the consequent distortion of the image is discussed. In neither of these chapters is the colour of the water itself con sidered; we are so far occupied only with the form of the reflexions, and the transparency of the water is for the present ignored. In the subsequent chapters we are more particularly concerned with the question of colour. In the third chapter, the water being as sumed to be still, it is shown to what extent this local colour is apparent under different conditions of vision. Finally, in the fourth chapter, the same considerations are applied to a rippled surface.