With a foreword by Edward Hughes. With a foreword by Edward Wisser. With a foreword by E. D. Hughes. with a foreword by Peter Debye. with a foreword by A. D. Baxter. With a foreword by E. J. Vaughan. With a foreword by Edwin Gregory. With a foreword by Lord Todd. With a foreword by Charles T. Myers. With a foreword by Charles C. Fries.