CONSANGUINITY AND THE SPECIAL SENSES
United States Census Data—The Blind—Consanguinity of Parents—Blind Relatives—Degree of Blindness—Causes of Blindness—Retinitis Pigmentosa—European Data—Probability of Blind Offspring of Consanguineous Marriages—The Deaf—Irish Census—Scotland and Norway—United States Census—Consanguinity of Parents—Deaf Relatives—Causes of Deafness—Degree of Deafness—Direct Inheritance of Deafness—Intensification through Consanguinity—Dr. Fay's Statistics—Personal Data—Probability of Deaf Offspring from Consanguineous Marriages—Opinion of Dr. Bell
SUMMARY AND CONCLUSION
Summary of Results—Inbreeding and Evolution—Effects of Close Inbreeding—Crossing and Variation—"Difference of Potential"—Resemblance and Intensification—Coefficient of Correlation between Husband and Wife—Between Cousins—Between Brothers and Sisters—Consanguinity and Eugenics—Consanguinity and Social Evolution—Conclusion