canvas, although the divisions between the rectangular forms remain intact. Here, too, the rectangular forms remain mostly colored. As the years passed and Mondrian's work evolved further, he began extending all of the lines to the edges of the canvas, and he began to use fewer and fewer colored forms, favoring white instead. These tendencies are particularly obvious in the "lozenge" works that Mondrian began producing with regularity in the mid-1920s. The "lozenge" paintings are square canvases tilted 45 degrees, so that they have a diamond shape. Typical of these is Schilderij No. 1: Lozenge With Two Lines and Blue (1926). One of the most minimal of Mondrian's canvases, this painting consists only of two black, perpendicular lines and a small blue triangular form. The lines extend all the way to the edges of the canvas, almost giving the impression that the painting is a fragment of a larger work. Although one's view of the painting is hampered by the glass protecting it, and by the toll that age and handling have obviously taken on the canvas, a close examination of this painting begins to reveal something of the artist's method. The painting is not composed of perfectly flat planes of color, as one might expect. Subtle brush strokes are evident throughout. The artist appears to have used different techniques for the various elements. The black lines are the flattest elements, with the least depth. The colored forms have the most obvious brush strokes, all running in one direction. Most interesting, however, are the white forms, which clearly have been painted in layers, using brush strokes running in different directions. This generates a greater sense of depth in the white forms so that they appear to overwhelm the lines and the colors, which indeed they were doing, as Mondrian's paintings of this period came to be increasingly dominated by white space. In 1926, Katherine Dreier, co-founder of New York City's Society of Independent Artists (along with Marcel Duchamp and Man Ray), visited Piet Mondrian's studio in Paris and acquired one of his diamond compositions, Painting I. This was then shown during an exhibition organized by the Society of Independent Artists in the Brooklyn Museum--the first major exhibition of modern art in America since the Armory Show. She stated in the catalog that "Holland has produced three great painters who, though a logical expression of their own country, rose above it