Embryology furnishes, also, the best measure of true affinities existing between animals.


Essay on Classification (1857). Contributions to the Natural History of the United States of America (1857), Vol. 1


Embryology furnishes, also, the best measure of true affinities existing between animals.

Embryology furnishes, also, the best measure of true affinities existing between animals.

Embryology furnishes, also, the best measure of true affinities existing between animals.

Embryology furnishes, also, the best measure of true affinities existing between animals.