A Textbook of General Embryology

General embryology should occupy an important place in the collegiate study of biology. In no other connection are the essential phenomena of life better illustrated, in no other form are there more readily appreciated. The fact of embryology lead directly to the great problems of the science of biology as it exists to-day, and many fundamental biological conceptions either are directly connected with, or are illuminated by, the study of the early phenomena of individual development.