Literary Notices. xxi 



retina. The divergent results obtained by different observers of " re- 

 current vision " (after-images from instantaneous stimuli) are ascribed 

 to different reactions on the part of the rods and cones. 



The eye adapted for daylight, as a matter of fact, produces an 

 after-image which is complementary. Thus if the illuminated spot be 

 blue the after-image is yellowish. On the other hand if the eye be 

 adapted for faint illumination the after-image is white and follows 

 without interval upon the colored one. (The apparatus used produces 

 a spectral blue spot rotating through a small circle.) But the phe- 

 nomena are not as simple as this statement might seem to indicate 

 and cannot be referred to wholly independent reactions of the rods 

 and cones respectively. 



Dr. Kries follows with an extended and technical paper on color 

 systems, but for this and Dr. Breuer's paper, entitled Ueber den Ein- 

 fluss des Makulapigments auf Farbengleichungen, the reader is re- 

 ferred to the original. c. l. h. 



(.-ajal's Recent Researches by the Golgi Method.^ 



CONTENTS. 



I. Urspriinge des Trigeminus. 

 II. Ueber ein aus dem Peduaculus cerebelii superior entspringendes 

 Faserbundel. 



III. Kleinhirn. 



IV. Vorderer Vierhiigel. 



V. Ganglion interpedunculare der Saugethiere. 



VI. Olive des Bulbus. 



VII. Ursprung des Vagus. 



Vni. Kerne des Goll'schen und Burdach'schen Strangs. 



IX. Hinteres Langsbiindel. 



X. Ursprung des Nervus vestibularis. 



XI. Nervus cochlearis und acustische Kerne. 



XII. Structur des Thalamus opticus. 



XIII. Rother Kern und Gegend der Haube. 



XIV. Pedunculus cerebelii inferior. 

 XV. Kern des Hypoglossus. 



XVI. Facialiskern. 



XVII. Zellen der Substantia reticularis des Bulbus. 



XVIII. Glandula pinealis. 



XIX. Endigung von Associationsfasern in der Molecularscliicht des Gehirns. 



1 Beitrag zum Studium der Medulla oblongata, des Kleinhirns und des 

 Ursprungs'der Gehirnnerven, by S. Ramon y Cajal; Ger. translation by Johannes 

 Bresler ; Introduction by E. Mendel. Leipzig, Barth, 1896. 



