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
Autumn Rhythm (Number 30) which paint colors were applied to the work. Pollock began by painting the right third of the canvas, laying down a skein of thin black lines, and then adding other colors of paint (mostly browns and white, with a small amount of teal blue) using several methods of dripping and pouring to create a variety of types of lines and puddled areas of paint until the section began to resemble its finished state. He then moved on to the center section, and ultimately the left-hand section using the same process. Throughout the making of the work, he painted from all