Paper, 'Examination of the cerebro-spinal fluid' by William Turner Turner describes investigations into several specimens of cerebro-spinal fluid. He concludes from his experiments that 'it may be safely asserted that the power possessed by the cerebro-spinal fluid of reducing the oxide of copper, is not owing to the presence either of grape-sugar or any of the allied substances: whether it may depend upon the presence of leucine or other modifications of albumen of a somewhat similar nature, or whether it may be due to the presence of a substance belonging to another series, is a point that has yet to be determined'. Subject: Neuroscience / Chemistry Received 18 May 1854. Read 15 June 1854. Communicated by James Paget. This paper was published in full in volume 7 of the Proceedings of the Royal Society as 'Examination of the cerebro-spinal fluid'. 1854