Figure, 'The "disease-spots"' by Harry Marshall Ward A figure in coloured pencil of a 'young coffee plant', the leaves of which are infected with Hemileia vastatrix or coffee leaf rust. The figure is housed in a paper envelope with instructions to the engraver. Subject: Botany / Pathology / Parasitology A print of this figure was published in volume 47 of the Proceedings of the Royal Society alongside the paper 'Croonian lecture .— On some relations between host and parasite in certain epidemic diseases of plants'. 1890