II 



Eecent Investigations on the Structure and Relations of 



THE Optic Thalami. By Henry Russell Pemberton 107 



Contributions to the Comparative Morphology of the Cen- 

 tral Nervous System, continued. By C. L. Herrick. 

 III. — Topography and Histology of the Brain of Certain 



Ganoid Fishes. With Plates X, XI, XII and XIII 149 



Editorial. Neurology and Psychology 183 



Eecent Literature xix 



October, 1891. 



Pages 201—286, XXV— XLII. Plates XVII— XXI. 



The morphological Importance of the Membranous or other 

 thin Portions of the Parieties of the Encephalic Cavi- 

 ties. By Burt O. Wilder 201 



Metamerism of the Vertebrate head 203 



The arachnoid of the Brain, with figures in the text. By /. 



W. Langdon 205 



Contributions to tbe Morphology of the Brain of Bony 

 Pishes. 



L— Siluridae, with Plate XVII. By G. Judson Herrick 211 

 IX._ Studies on the Brains of some American Fresh- 

 water Fishes, with Plates XIX, XX, XXI. By C. L. 



Herrick 228 



The Development of the Cranial Nerves of Vertebrates. 



By C. von Kiipff'er. Translated by Oliver S. Strong .... 246 

 Morphology of the avian Brain. Continued, with Plate XVIII. i 



By C. H. Turner 2o5 



Literary Notices XXV. 



The Trophic Function of Nerves XXV. 



Degeneration and Atrophy as a result of Section of 



the Cranial Nerves XXVH. 



The Developmont of Spinal Ganglia in Man .... XXVIH. 

 Electro-motor Disturbances in the Brain as Products 



of Psychical Activity XXIX. 



The Eelation of the Sympathic System to the 

 erectile Appendages of the head in the Gallinaceae . . XXIX. 



The Sympathic System XXX. 



Contribution to the Study of the Brain of Tracheate 



Ai'thropods XXX. 



The Nervous System of Copepods X XXTTI . 



The Development of the Nei-vous System of Spiders XXXV. 



Nervous System of Serpula XXXV. 



Development of the Brain of Horse-shoe Crab . . . XXXV. 



