Definition of genealogical:
- "Eugenics as a Factor in the Prevention of Mental Disease", Horatio Milo Pollock.
- "Charlotte's Inheritance", M. E. Braddon.
Adopting a more direct method of determining the frequency of cousin marriage, I estimated in each of sixteen genealogical works, the number of marriages recorded, and found the total to be 25, 200. From these sixteen families I obtained 153 cases of first cousin marriage, or .- "Consanguineous Marriages in the American Population", George B. Louis Arner.