Letter from Michael Perkins, 57 Victoria Road, Cambridge, to 'Dear Sirs' [the Secretaries of the Royal Society] Applying for payment of the stipend of the Mackinnon Studentship due on 10 July. He has worked at the Sir William Dunn Institute of Biochemistry during the past quarter. He requests that the Mackinnon Studentship regulations are sent to him, in order to correctly submit his annual report. 11 July 1926