Referee's report by William James Russell, on a paper 'Further experiments on the distribution of micro-organisms in air (by Hesse's method)' by Percy Faraday Frankland and T G Hart Recommended for publication in the Proceedings of the Royal Society of London. The paper appears supplementary to another already in the Proceedings. Subject: Physics and Chemistry, Zoology [Published in the 'Proceedings of the Royal Society of London', 1887] 18 December 1886