Intermarriage; or the mode in which, and the causes why, beauty, health and intellect, result from certain unions, and deformity, disease and insanity, from others: demonstrated by delineations of the structure and forms, and descriptions of the functions and capacities, which each parent, in every pair, bestows on children, - in conformity with certain natural laws, and by an account of corresponding effects in the breeding of animals. Illustrated with drawings of parents and progeny By Alexander Walker