1-155-175 - Ann Ronan Picture Library/Heritage-Images

Five types of the human race, late 19th century. Based on his analysis of human skulls, German physiologist and anthropologist Johann Friedrich Blumenbach (1752-1840) theorised that the entire human race could be divided into five racial types; Caucasian, Mongolian, Malayan, Ethiopian and American. This view was widely accepted from the late 18th until the late 20th century, when it was determined that Homo Sapiens was monotypic (not divisible into races or subspecies)