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"Heterocercal tail of Acipenser. a, fulcra; b, osseous bucklers." — Encyclopedia Britannica, 1893

Acipenser

"Heterocercal tail of Acipenser. a, fulcra; b, osseous bucklers." — Encyclopedia Britannica, 1893

"a, the osseous septum grooved for the passage of the cochlear nerve b, which terminates by a free end inside the chamber c, along the floor of which it lies for a short distance; d, d are the two layers of the membranous septum. Lying in contact with the end of the nerve is the enlarged extremity of a rod e, which is connected in a flail-like manner by the hinge f to another rod, which is fixed at g." — Chambers' Encyclopedia, 1875

Auditory Nerve

"a, the osseous septum grooved for the passage of the cochlear nerve b, which terminates by a free end…

"Shows how the bones of the arm (q), forearm (q'x), and foot (o), are twisted to form an osseous screw."—Pettigrew, 1875

Anterior Extremity of Elephant

"Shows how the bones of the arm (q), forearm (q'x), and foot (o), are twisted to form an osseous screw."—Pettigrew,…