Brain of a Fish
The brain of fish are small, it does not fill the whole cranial cavity, there being found within it a spongy fatty mass. Labels: 1, Olfactory ganglions. 2, Cerebrum. 3, Optic ganglions 4, Cerebellum. 5, Medulla Oblongata and Spinal Cord.
Cutter, Calvin First Book on Analytic Anatomy, Physiology and Hygiene, Human and Comparative (Philadelphia: J. B. Lippincott & Co., 1875) 150