Drawing, base of brain of Ethiopian male by J Wagner Plate 32 showing an anatomical study of the base of the brain of an Ethiopian male. Inscribed with publication and plate details. Signed in graphite bottom right 'J Wagner de natura del.' The key from the previous tracing is added to the final plate by the engraver. Subject: Eugenics / Anatomy Published in Philosophical Transactions as part of paper titled 'On the brain of the negro [sic], compared with that of the European and the orang-outang' by Friedrich Tiedemann. Received and read to the Royal Society on 9 June 1836. [1836]