Letter from S Brodetsky, regarding a paper 'The general motion of the aeroplane' by S Brodetsky Sectional Committee: Engineering Due to an oversight, had not completed the form to request copies of the paper. Encloses the form, requesting 100 copies. If it is too late however, requests 50 copies at his expense. Note on request form, dated 9 January 1940, states that only one copy was sent. [Published in the Philosophical Transactions of the Royal Society] Endorsed on recto as received 9 August 1939. 7 August 1939