In his account of the official opening of the new Physics Department, Maurice Wilkins wrote : " the theoretical group deals with " applications of wave mechanics and statistical mechanics . . . the theory of the chemical bond . . . questions of chemical reactivity . . . stability of crystal structures, biological properties of cancer-producing compounds and other molecules, electrical and magnetic properties of metals, . . . properties of electrolytes and colloidal solutions, including . . . electrophoresis . . . more than one hundred papers have been published during the past five years ."