Photographs, the lumbo-sacral plexus of Macacus rhesus by James Samuel Risien Russell Four photographic plates, labelled figures 1-4, showing the spinal cord and lumbar nerve roots of the Rhesus macaque. Subject: Anatomy / Neuroscience / Pathology These photographs were published in volume 54 of the Proceedings of the Royal Society alongside the paper 'An experimental investigation of the nerve roots which enter into the formation of the lumbo-sacral plexus of Macacus rhesus'. 1893