Observations on the anatomy, physiology, and degenerations of the nervous system of the bird

In this research the modern methods of investigating the course of tracts and their degeneration in the central nervous system have been used. The previous literature of the subject is scanty. Bumm first gave an account of the various tracts in the brain, and the histological side has been and is still being worked out by Brandis. Valuable information is given by Edinger in his ‘Vorlesungen,’ and quite recently the Marchi method has been used and the results obtained described by Wiener and Münzer, Wallenberg and Friedländer.