FALSE TONE. 891. The word tone has been hitherto understood to mean a veil of a particular colour spread over the whole picture; it was generally yellow, for the painter instinctively pushed the effect towards the powerful side. 892. If we look at a picture through a yellow glass it will appear in this tone. It is worth while to make this experiment again and again, in order to observe what takes place in such an operation. It is a sort of artificial light, deepening, and at the same time darkening the _plus_ side, and neutralising the _minus_ side. 893. This spurious tone is produced instinctively through uncertainty as to the means of attaining a genuine effect; so that instead of completeness, monotony is the result. WEAK COLOURING. 894. It is owing to the same uncertainty that the colours are sometimes so much broken as to have the effect of a grey camayeu, the handling being at the same time as delicate as possible. 895. The harmonious contrasts are often found to be very happily felt in such pictures, but without spirit, owing to a dread of the motley. THE MOTLEY. 896. A picture may easily become party-coloured or motley, when the colours are placed next each other in their full force, as it were only mechanically and according to uncertain impressions. 897. If, on the other hand, weak colours are combined, even although they may be dissonant, the effect, as a matter of course, is not striking. The uncertainty of the artist is communicated to the spectator, who, on his side, can neither praise nor censure. 898. It is also important to observe that the colours may be disposed rightly in themselves, but that a work may still appear motley, if they are falsely arranged in relation to light and shade. 899. This may the more easily occur as light and shade are already defined in the drawing, and are, as it were, comprehended in it, while the colour still remains open to selection. DREAD OF THEORY. 900. A dread of, nay, a decided aversion for all theoretical views respecting colour and everything belonging to it, has been hitherto found to exist among painters; a prejudice for which, after all, they were not to be blamed; for what has been hitherto called theory was groundless, vacillating, and akin to empiricism. We hope that our labours may tend to diminish this prejudice, and stimulate the artist practically to prove and embody the principles that have been explained. ULTIMATE AIM. 901. But without a comprehensive view of the whole of our theory, the ultimate object will not be attained. Let the artist penetrate himself with all that we have stated. It is only by means of harmonious relations in light and shade, in keeping, in true and characteristic colouring, that a picture can be considered complete, in the sense we have now learnt to attach to the term. GROUNDS. 902.