Copy letter from Robert William Frederick Harrison, to Frederick Frost Blackman, [Fellow of the Royal Society] Francis Darwin has written to say that he is communicating a paper by Blackman and Miss G Matthaei on 'A Quantitative Study of Carbon Dioxide Assimilation and Leaf-Temperature in Natural Illumination', and Larmor has provisionally reserved a place for it to be read on 13 April. However they cannot announce for reading a paper which has not been received. Asks if the manuscript can be sent by Monday morning. Would also be glad of a short abstract to have set up for the use of Fellows at the meeting. 7 April 1905