Egbert Torenbeek ; with a foreword by H. Wittenberg. J. S. Rogers ; with a foreword by T. H. Laby. Stuart A. Rosenfeld ; with a foreword by Ray Marshall. by Ethel Browning ; with a foreword by W. V. Mayneord. A. J. Essex-Cater ; with a foreword by John Butterfield. V.I. Sreenivas ; with a foreword by C.E. Welch. by S. H. Steinberg ; with a foreword by Beatrice Warde. by Erwin Singer ; with a foreword by Esward S. Tauber.