Copy letter from Herbert Rix, to A Bache, Secretary, Institute of Mechanical Engineers 'Dear Sir, The errand boy who ought to have delivered the nos of Proceedings ['Proceedings of the Royal Society'] (& apparently did not) has left us. I am afraid I cannot send the missing nos [numbers] on my own responsibility, but I will bring the matter before the Library Committee at their next meeting, which will probably be in about three week's time. Yours truly Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 2 February 1892