LANDSCAPE PAINTING
value out to its very centre; and that, per contra, the darkest spot in the tree itself will be found to be near its focal point, owing to the inward refraction from the sky—for naturally refraction acts both ways, from light to dark as well as from dark to light. Whether it is necessary or advisable in practical painting to utilize the law up to the extreme limit, is of course a point that is open to discussion. As painters our business is to transmit to picture-lovers through the medium of our pictures the emotions, and the impressions of strength and power, or of poetic beauty which have come to us direct from nature; but in doing this we are not called upon to saddle ourselves with more difficulties than are absolutely necessary. Indeed it is by means of the wise selection and synthesis of the elements which are essential to his work and the ruthless elim-
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