In one of Professor Henslows Botanizing excursions to Bottisham Fen I well recollect an amusing incident wh befel Darwin. In order to clear the ditches we were provided with several jumping poles with which we had to swing ourselves across. One object of our search was to find the [Atriculavia], a specimen of which caught his keen eye, and in order to secure he attempted to jump the ditch on the opposite side of which it grew. Not however having secured sufficient impetus for the leap, the pole stuck fast in the middle in a vertical fraction, of course with D. at the top. Nothing daunted however he coolly slid down, secured the prize, and brought it, all much besmirched as he was to the amused Professor.
(Rodwell, John Medows. : [Recollections of Darwin in Cambridge.] )