The image used to come from the hand
For as long as there had been drawing, a drawing was something an artist invented and executed. The marks began in the hand and the will: you decided what to put down and then you put it down, with skill, observing the world or composing from imagination, but in either case originating the picture. Even Dada collage, Ernst’s own earlier mode, still worked by choosing and assembling fragments, the artist picked the pieces. Whatever else changed across the centuries, the source of the image was the artist. That was the floor under the whole practice. Nobody thought to question it because there was nothing obviously else for an image to come from.
The artist becomes a reader of accident
Frottage moved the source. In Histoire Naturelle the image does not begin in the hand; it begins in the chance texture of the world, the grain of a floorboard the artist did not make and cannot control. The pencil only transfers it. The artist’s real job shifts from inventing form to reading accident, from author to, in Ernst’s own word, spectator of his own pictures. He watches what the grain hands up and chooses what to see in it. Three things follow from that move.
First, chance and found texture become a repeatable, systematic engine for fine art. Chance was not new to the avant-garde (Ernst’s own Dada circle, Arp included, had been letting accident arrange collages a decade earlier) but frottage turned it from a one-off gesture into a method you could run again and again, a generative procedure rather than a party trick, a line that runs straight forward to grattage, to décalcomania (pressing and peeling paint), and on to the chance-driven abstraction that came after.
Second, it gives Surrealism a repeatable visual method for tapping the unconscious: the eye reading shapes into random marks is the picture-making cousin of automatic writing, the technique the poet André Breton and his Surrealist circle used to let the unconscious mind write without the conscious mind censoring it. Frottage is the same maneuver with a pencil: in both, the trick is to get the deliberate, deciding mind out of the way (the writer lets the hand run, Ernst lets the floorboard supply the marks) so that whatever surfaces comes from somewhere other than conscious intention. That is precisely the prize the Surrealists were after. Breton had launched Surrealism as a movement only the year before, in 1924, around exactly this idea, that the unconscious let off its leash was the real source of art, so frottage arrived as the perfect visual proof of a program barely a year old.
Third, it quietly demolishes the old idea of drawing skill: there is no modeling, no observed contour, no conventional draftsmanship anywhere on the sheet, and yet legible creatures and forests appear. The accident does the drawing.
Ernst, on the floorboards
Ernst set the discovery down himself, years later, in an essay called Beyond Painting (in French, Au-delà de la peinture, first published 1936; the English version appeared in 1948). It is the closest thing the technique has to a founding statement:
“… finding myself one rainy evening in a seaside inn, I was struck by the obsession that showed to my excited gaze the floor-boards upon which a thousand scrubbings had deepened the grooves. I decided then to investigate the symbolism of this obsession, and, in order to aid my meditative and hallucinatory faculties, I made from the boards a series of drawings by placing on them, at random, sheets of paper which I undertook to rub with black lead.”
And on what the rubbings turned into:
“The drawings thus obtained steadily lost … the character of the material being studied (wood) and assumed the aspect of unbelievably clear images.”
The words are genuinely Ernst’s, from Beyond Painting(English edition, ed. Robert Motherwell, 1948), and the dated discovery (a rainy evening, the seaside inn at Pornic, 10 August 1925) is his own and repeated by the museums. The exact wording, though, drifts between translations: “black lead” (graphite) is sometimes rendered “soft pencil,” “floor-boards” sometimes “floorboards,” the “obsession” phrased a few different ways. Read it, then, as Ernst’s known account in the standard 1948 English text rather than one fixed, canonical original. The thought is firmly his; the precise phrasing is a translator’s.