Although we are justified in saying that there can be no progress, no discovery in art, but only in the sciences, and that the artist who begins afresh upon his own account an individual effort cannot be either helped or hindered by the efforts of all the others, we must nevertheless admit that, in so far as art brings into prominence certain laws, once an industry has taken those laws and vulgarised them, the art that was first in the field loses, in retrospect, a little of its originality. Since Elstir began to paint, we have grown familiar with what are called “admirable” photographs of scenery and towns. If we press for a definition of what their admirers mean by the epithet, we shall find that it is generally applied to some unusual picture of a familiar object, a picture different from those that we are accustomed to see, unusual and yet true to nature, and for that reason doubly impressive to us because it startles us, makes us emerge from our habits and at the same time brings us back to ourselves by recalling to us an earlier impression.