Referee's report by Joseph Dalton Hooker, on a paper 'On the protrusion of protoplasmic filaments from the glandular hairs of the common teasel (Dipsacus sylvestris)' by Francis Darwin Not recommended for publication in the 'Philosophical Transactions of the Royal Society'. There is insufficient evidence to support the theory and subject of the paper. Gives a thorough critisim thereof. Otherwise the paper contains valuable observations, which are covered sufficiently in the abstract published in the Proceedings. Subject: Botany [Published in the 'Proceedings of the Royal Society of London', 1878] 7 May 1877