Letter from Thomas Gold to Dr J V Hollweg, National Center for Atmospheric Research, High Altitude Observtory, PO Box 3000, Boulder, Colorado Thanks him for his letter and the reprints, which he is glad to have. He and Dr Benz had seen and studied them, and they were quite aware of this work. Gives his views of how to achieve a more complete understanding by doing a complete, self-consistent computation. 8 July 1976