Ixxxviii Journal of Comparative Neurologv. 



The Peripheral Relations of the Auditory Nerve.^ 



The author is continuing his studies on the Morphology of the 

 Vertebrate Ear,- using the method of Golgi. This method in the 

 hands of Retzius and Van Gehuchten lead to the conclusion that the 

 nerve-endings in the Organ of Corti are intercellular. This author, 

 however, considers that these results were derived from preparations 

 which had been imperfectly colored. His own preparations show 

 unmistakable instances of direct continuity of nerve fibres and hair 

 cells. His conclusions are summoned up as follows: 



A. The hair cells and the ganglion cells in connection with them 

 constitute a single morphological unit — an acoustic element — 

 which effects connection between superficial and central points. 



B. No fundamental distinction exists between acoustic and olfactory 

 elements. 



C. The so-called "spiral fibres" are only short portions of radial 

 fibres which reach their destination by a circuitous path. 



D. All fibres of the eighth nerve, so far as is definately established, 

 originate in the hair cells, 



E In the embryos of all mammals the eighth nerve is made up at 

 one stage of nerve fibres which arise from the Sauropsida-organ, 

 and at the disappearance of this and the simultaneous formation 

 of the Organ of Corti the acusticus passes over to the latter, thus 

 altering its connections. 



Statistics of Dreams. 



Under this title Mary W. Calkins-'^ records the results of ex- 

 tended observations upon dream phenomena and makes interesting 

 observations upon their psychological significance. Tables are given 

 of the number of recorded dreams in which representations of the 

 various senses are included and, as would be expected, the visual 

 greatly exceed all others; thus in 298 dreams there were 240 visual, 

 157 auditory, 21 dermal, 4 olfactory, and i general representations of 

 sense. The psychological analysis might have been closer but the 

 statistics cannot fail to be useful. 



' Ayers, H. Ueber das peripherische Verhalten der Haarzellen des 

 Gehororganes. Anat. Anzeiger, VIII, 1893, No. 12 and 13. 



'■'Journal of Morphology, Vol. VI, I and 2, 1892. 



^Am. Journ, Psychology, v. 3. 



