Drawing, 'Transverse section of the human spinal cord, at the third cervical nerve: lines drawn blue are the spinal accesory roots x60' Plate 25, figure 12 showing transverse section through the grey substance in a cervical enlargement of the spinal cord of a human. Inscribed recto with publication and plate details. Note in graphite on the bottom 'Drawn from Nat by Author J L Clarke'. The manuscript for this paper is wanting. Subject: Anatomy Published in Philosophical Transactions, volume 149 (1859) as part of paper titled 'Further researches on the grey substance of the spinal cord' by Jacob Augustus Lockhart Clarke. Received and read by the Royal Society on 17 June 1858. [1858]