Here and there, even of old time, the wise men recognised it; and we so recognise it to-day, as witness our bars against consanguineous marriage.
"The Kempton-Wace Letters"
Jack London Anna Strunsky
The need for statistics of the frequency of occurrence of consanguineous marriages has been strongly felt by many far-sighted men.
"Consanguineous Marriages in the American Population"
George B. Louis Arner
Some topics, therefore, which have frequently been treated in connection with the general subject of consanguineous marriages are here ignored as having no scientific interest, as for instance that of the so-called "marriages of affinity," which has been so warmly debated for the past fifty years in the British Parliament.
"Consanguineous Marriages in the American Population"
George B. Louis Arner