THE SEGMENTAL VALUE OF THE CRANIAL NERVES. 169 



1878. Balfour, — Monograph on the Development of Elasmobranch 



Fishes. 

 . . Gegenbaur. — -Elements of Comparative Anatomy, English Trans- 

 lation. 

 Marshall. — The Development of the Cranial Nerves in the 

 Chick. Quart Joum. of Micros. Science, vol. xviii. 



1879. Kolliker. — EntivicTcelungsgeschichte des Menschen und der 



hoheren Thiere. Zweite Auflage. 

 Marshall. — The Morphology of the Vertebrate Olfactory 



Organ. Quart. Joum. of Micros. Science, voL xix. 

 Schwalbe. — Das Ganglion Oculomotorii. Jenaische Zeitschrift, 



Bd. xiii. 

 Wiedersheim. — Die Anatomie der Gymnophionen. 



1880. Gunther. — Introduction to the Study of Fishes. 

 Wiedersheim. — Morphologische Studien, Heft i. 



1881. Balfour. — Treatise on Comparative Embryology, voL ii. 

 Marshall. — On the Head-Cavities and Associated Nerves of 



Elasmobranchs. Quart Joum. of Micros. Science, vol. xxi. 

 Marshall and Spenoer. — Observations on the Cranial Nerves 



of Scyllium. Quart. Joum. of Micros. Science, vol. xxi. 

 Wiedersheim. — Die Anatomie des Frosches, von Dr. Alexander 



Ecker. Zweite Abtheilung. 



