CENTRAL NERVOUS SYSTEM IN VERTEBRATE ANIMALS. 
769 
gland. The existence of the pituitary body has never been explained. A glandular 
structure developed from the mucous membrane of the throat attached to the brain, 
it seems quite out of place ; but considered as the remains of a former oesophageal or 
pharyngeal gland its raison d’etre seems accounted for. The epiphysis cerebri is more 
obscure, but appears to be the remains of some vascular body useful in an ancestral 
state of existence, for it certainly has no functions to perform in living species. I 
would submit, then, that if the oesophagus did once pass through the brain as in 
Invertebrata, it passed through the infundibulum and the third ventricle. 
Bibliography of the Nervous System in Teleostei. 
I have not been able to procure cojiies of books marked thus, # . 
1. Willis, Thomh;, Cerebri Anatome. 1664. 
2. Malpighii, Marcelli, I)e Cerebro epistolse ad Carolum Fracassatum. 1664. 
3. Collins, S., System of Comparative Anatomy. 1685. 
4. Haller, Alberti v., Opera Minora, tom. iii. 1768. 
5. Haller, A. von, Elementa Physiologies corporis humani, tom. ii., p. 591. 
6. Vicq d’Azyr, Mem. cle Mathematique et cle Physique, tom. vii. Paris, 1776. 
i. Camper, P., Sammtliche kleinere Schriften. Trans, into German by T. F. M. 
Herbell. 1785. 
8. Monro, Alex., Structure and Physiology of Fishes. 1785. 
9. Ebel, Godofredi, Observationes Neurologicee. 1788. 
10. "Scarpa, Antonio, Disquisitiones Anatomicse. 1789. 
11. '“Chaussier, Exposition du Cerveau. 1807. 
12. Carus, Carl Gustav, Versuch einer Darstellung des Nervensy stems, &c. 1814. 
13. Treviranus, G. Pi. and L. C., Yermischte Schriften, Anatomische, Bd. iii. 1816. 
14. Tiedemann, F., Deutsches Archiv f. die Physiologie. Bd. ii. 1816. 
15. Tiedemann, F., Anatomie und Bildungsgeschichte des Gehirns im Foetus des 
Menschen. 1816. 
16. Arsaki, Apostole, Cornmentatio de Piscium cerebro et Medulla Spinali. 1836. 
17. AYeber, Ernesto Henrico, Anatomia comparata Nervi Sympathetici. 1817. 
18. “AYittjack, Joach., De Piscium cerebro. Berolini, 1817. 
19. Zagorsky, De Syst. Nerv. Piscium. 1833. 
20. "Wenzel, De Penitiori Structure cerebri. 
21. Kuhl, Heinrich, Beitrage zur Zoologie und vergleichenden Anatomie. 1820. 
22. Weber, Ernesti Henrici, De Aure et Auditu hominis et animalium. 1820. 
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