The Special Committee on Geophysical and Geological Study of Continents was established because of the Executive Committee's conviction that the cooperative and “simultaneous application of geophysics and geology in an attack upon the major problems of Earth composition and evolution cannot fail to lead to great advances in Earth science”—a restatement of the conviction of all closely in touch with geophysics that the intimate blending of physics and geology will induce as profound a broadening and advance in Earth science as was wrought in chemistry some two decades ago, when physics and chemistry were blended—to the transformation of both.The Committee has accepted the responsibility thus given it to aid in this new wedding of the sciences, with a deep appreciation of the opportunity offered, and with a full enthusiasm for the work to be undertaken. The problems to be attacked are of great magnitude and of great importance, and the successful execution of this attack obviously will call not only for close team‐work within the American Geophysical Union but also will call for a broad, cordial, and interesting cooperation with other units of the National Research Council, and especially with its Division of Geology and Geography and the component unit