Copy letter from an unknown correspondent, to Dr Richard Tetley Glazebook, Fellow of the Royal Society, Director of the National Physical Laboratory In Professor [Joseph] Larmor's absence a copy of a letter received from the Board of Trade regarding the registration of Trade Marks is enclosed for Glazebrook to peruse along with the three pamphlets mentioned in the letter [not enclosed]. It will probably save time if Glazebrook will mark the tests in the pamphlets in the manner required by the Board of Trade and returns the pamphlets to the Society with a note of any other necessary information. The matter will then be brought before Larmor with a view to an answer being sent by him to the Board of Trade. 28 August 1907