Copy letter from Michael Foster, to John Newport Langley, Fellow of the Royal Society 'Dear Langley, Please look over this, which is much longer than abstract in Proc R.S. ['Proceedings of the Royal Society'] and say whether in your opinion its prior publication in B.M.Jl ['British Medical Journal'] would prejudice the publ. [publication] of paper in Phil. Trans. ['Philosophical Transactions of the Royal Society']. If this is not clear consult me at Cambridge. (signed) M. Foster'. 7 July 1891