Letter from [Vernon Herbert] Blackman to the Assistant Secretary of the Royal Society [Ronald Winckworth], regarding a paper 'On the presence of Citrinin in Crotalaria Crispata' by [Alfred James] Ewart Paper reference code: B.103 Writes that the paper was interesting but of 'slight importance', and considers where the paper should be published. [Blackman writes Winckworth as Wigglesworth] [Not published in the Royal Society journals but published in the Annals of Botany, vol. 47, n. 188, 1933, pp. 913-915]. Received 8 March 1933 7 March 1933