Referee's report by George Gabriel Stokes, on a paper 'On the colouration of leaves of plants' by Arthur Hill Hassall Not recommended for publication. Although the paper contains a record of painstaking work, it is 'of altogether too crude a character' to be published. He has gone wrong in identifying the blue element of chlorophyll and has overall not correctly interpreted the changes in the colours of leaves. Subject: Botany [Not published]. 25 November 1892