IN a Chadwick Lecture delivered on May 12, Dr. J. Alison Glover, late senior medical officer, Board of Education, discussed the school medical service in war-time. In the thirty-one years between the inauguration of the school medical service and the outbreak of the present War the service passed from ascertainment and treatment to prevention, and is entering into a fourth phase, the search for “positive health”, the appreciation “that it is the legislator's task to frame a society which shall make the good life possible” and so enable every child to reach the highest degree of health and development of which he is inherently capable. These phases are well shown in the changing outlook on nutrition, from the ascertainment and treatment of malnutrition to the striving after optimum nutrition. In this period of thirty-one years, the British school-child has undergone a wonderful metamorphosis for which, though many other factors have had a share, the school medical service has been largely responsible. The school-child of 1939 was bigger, more resistant to disease, cleaner and in every way fitter to stand the strain of total war than his predecessor of 1908.