Canvas white pigment and calcium carbonate is rather brittle and susceptible to cracking. As lead-based paint is poisonous, care has to be taken in using it. Various alternative and more flexible canvas primers are commercially available, the most popular being a synthetic latex paint composed of titanium dioxide and calcium carbonate, bound with a thermo-plastic emulsion. Many artists have painted onto unprimed canvas, such as Jackson Pollock, Kenneth Noland, Francis Bacon, Helen Frankenthaler, Dan Christensen, Larry Zox, Ronnie Landfield, Color Field painters, Lyrical Abstractionists and others. Staining acrylic paint into the fabric of cotton duck canvas was more benign and less
Landscape with the Fall of Icarus generally limited to a layout of the elements. Probably because the thin, weakly covering paint on white ground would hide imperfectly a detailed graphism. A re-interpretation of the reflectograms in agreement with the other analysis suggested the conclusion that the work in the Museum of Fine Arts in Brussels is a panel painting transferred to canvas. The paint layer and maybe also the underdrawing have been severely damaged by this intervention as well as by two more relinings, responsible for the heavy overpainting. In the paint sample remains a fragment with structure and composition matching perfectly the technique of the