Letter from S F Dermott to Profesor S K Runcorn, Head, School of Physics, The University, Newcstle upon Tyne, NE1 7RU, England Covering letter adn typescript of Foreword. Thanks him for his Foreword, to which he has made some stylistic changes, and asks him to add a few more points to the important ones he has already made. Lists them, and emphasises particularly an explicit sentence of the benefits to Earth science that have been and may be gained by a study of the planets, their origin and evolution. 9 June 1977