Oken

After Oken's work the vertebral theory was taken up generally by both the German and the French anatomists.

These discoveries were confirmed and extended for the 135chick by the embryologist Huschke, a pupil of Oken.

He superadded the evolutionary theories of Oken, which were equally idealistic, but were altogether repugnant to Cuvier.

Goethe and Oken discovered at the same time the vertebral system.

It was to a certain extent, however, thrown into disrepute by various fantastic theories with which Oken surrounded it.