25.2 MB (2.1 MB compressed)
2315 x 3801 pixels
19.6 x 32.3 cm ⏐ 7.7 x 12.7 in (300dpi)
AMERICAN PHILOSOPHICAL SOCIETY / SCIENCE PHOTO LIBRARY AMERICAN PHILOSOPHICAL SOCIETY / SCIENCE PHOTO LIBRARY
Chimpanzee research. At upper left, a chimpanzee is standing on a stack of boxes to reach bananas. A seated chimpanzee is at lower right. This glass negative is from the papers of German psychologist Wolfgang Kohler (1887-1967). Kohler's work at a primate research station in Tenerife resulted in his publication 'The Mentality of Apes' (1917).
Model release not required. Property release not required.