JDH writes to Sir William Turner Thiselton-Dyer about the meeting of the British Association for the Advancement of Science, which he is attending in York. He reports that John Lubbock's address was well received & that Mountstuart Elphinstone Grant-Duff is present but unwell. JDH's section of the meeting, on geography, has had some bad papers & speakers, he mentions particularly Trelawney Saunders. A polemical sermon was given at the meeting by the Bishop of Manchester, which JDH felt unnecessary as nobody had 'trodden on toes theological'. He also criticizes Osbourne Reynolds' lecture on rain & hail.