This book examines the working method, experimental techniques, and compositional choices Matisse used in works created between 1913 and 1917. The works that Henri Matisse (1869-1954) executed between late 1913 and 1917 are among his most demanding, experimental, and enigmatic. Often sharply composed, heavily reworked, and dominated by the colors black and gray, these compositions are rigorously abstracted and purged of nearly all descriptive detail. Although they have typically been treated as unrelated to one another, as aberrations within the artist's oeuvre, or as singular responses to Cubism or World War I, this book reveals the deep connections among them.