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DEFINITION OF TERATOLOGY.
The word Teratology, which we owe to Geoffrey St. Hillaire, literally means the Science of Monsters, and in the present article we shall apply the term to the doctrine of congenital deformities. Teratology, in a scientific sense, constitutes a part of Pathological Anatomy, which comprises all the anomalies of the organization; those which occur during intra-uterine life are called congenital, and those which arise during extra-uterine life, acquired. What are commonly called monsters are most generally referable to the former; that, is to the imperfections of the primative formation.
Teratology, therefore, as a department of Morphological Science treats of the deviations from the normal development of the embryo.
The term embryo is commonly limited in human anatomy to the ovum in the first three months of its intra-uterine. life, in which it is still developing or acquiring the rudiments of its form; the term fætus being applied
JONES J. ABSTRACTS OF CONTRIBUTIONS TO TERATOEOGY.DEFINITION OF TERATOLOGY. GIANTS AND DWARFS. CLASSIFICATION OF MONSTROSITIES. FOUR-LEGGED CHILD, J. MYRTLE CORBAN. SIAMESE TWINS. HUNGARIAN SISTERS. SOUTHERN NIGHTINGALE. SOUTH CAROLINA TWINS, MILLIE AND CHRISTINE. JOHN ALLEN. HERMAPHRODITISM. MISS EMILY LAUNDRY.THE LOUISIANA BEARDED GIRL.. JAMA. 1888;XI(16):545–554. doi:10.1001/jama.1888.02400680005001a