Descriptive statistics of Tiedemann’s brain weight data, from Tiedemann (1837).

For definitions, see Table 2. These data from Tiedemann’s expanded (1837) publication on brain weight across the races show that an increased sample size resulted in some differences in the ranking of mean cranial size: Tiedemann’s 1836 data (from 248 crania) show a ranking, from largest to smallest, of Caucasian > American > Malay > Mongolian > Aethiopian, while Tiedemann’s 1837 data (from 489 crania) show a ranking of Caucasian > American > Mongolian > Aethiopian > Malay. As in 1836, Tiedemann (1837) did not publish racially grouped means.