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As the observations with which Dr Duncan sen. concluded his lectures on the subject of the human blood, delivered during his winter course, on the institutions of medicine, at Edinburgh, on the 15th of December 1824, may perhaps be incorrectly reported by some of his hearers, he has thought it right to put them in print, in the words in which they were delivered by him, that each of his students may be enabled to give a fair report of them / [Andrew Duncan]. Public Domain Mark. Source: Wellcome Collection.