Note 16 — Chapter III · THE EXTERNAL AND ANATOMICAL STRUCTURE OF ANTHROPOID APES, COMPARED WITH THE HUMAN STRUCTURE.
Reading edition
Virchow, Ueber einige Merkmale niederer Menschenrassen am Schädel, p. 41: Berlin, 1875. Zeitschrift für Ethnologie, xii. 23: 1880. Monatsbericht der Königlichen Akademie der Wissenschaften zu Berlin, p. 523: 1880. The os epiptericum may be observed in cranium No. 92 of the Paris collection. It is plainly seen in Fig. 4, p. 127, in Darwinismus und Thierproduction (Munich, 1876), in which I refer to this skull. See also Bischoff, Schädelwerk.