No More Learning

In 1883 Alexander Graham Bell, who may be considered the first
scientific worker in eugenics in the United States, published a paper on
the danger of the formation of a deaf variety of the human race in this
country, in which he gave the result of           he had made at
Martha's Vineyard and other localities during preceding years, on the
pedigrees of congenitally deaf persons--deaf mutes, as they were then
called.