368 JoiiDial of Couiparativc Neurology and Psychology. 



tracts sooner than its base, and that a strip of heart nius^ele !«tinuilated 

 at one end may begin to respond first at the (»ther extremity. .\\\ of 

 the above facts point toward nervous transmission of definite stimuli. 

 lu the case of the medusae the stimuli orij,nnate in the sense organs of 

 the bell ; the source of the stimuli reL'ulating the heart's action is 

 practically unknown. 



Following the text of the book is a valuabk' list of the recent lit- 

 erature on the nervous system. Much of the original work described 

 by Bethf. is necessarily incomplete, and as he himself states, the theories 

 advanced are but ]»reliminary, and will undoubtedly be subjected to 

 futur^e correction. They have already proved of value, however, in 

 ^stimulating research along similar lines : and the many valuable results 

 of the author serve to emi)hasize the importance of combining histolog- 

 ical and physiological methods in attacking the abstruse problems of 

 neurology. c. w. p. 



Goldschmidt, R. Leber die -otjen.Tnnten ladiargestreiften Ganglienzellen von 

 A-cari>. Btoloi;. Centrhl., Hand XXIV, No. 5, pp. 173-1S;. 1904. 



Discusses the radially striped ganglion cells of .-isain's. He finds 

 them in all jiarts of the nervous .>.y>tem. The >triped appearance is 

 due to radial projections l"rom the glia capsule extending into the cell 

 for some distance, finally disapjjearing in the cytojjlasm. He believes 

 these to be characteristic of all ganglion cells and supi)Oses the Gulgi 

 nets of mammalians to be of the same nature. They are probably not 

 trophic. Their elastic nature may serve to suspend the cells in such 

 a manner as to resi)ond easily to vibrations. .According to this sup- 

 position, a tearing of these projections is suggested as an explanation 

 of the serious disturbance of the nervous system caused by severe me- 

 chanical shock. (i. WAi.NFK. 



Kolmer, W. Eine beobachtung iiber vitale F.irbung bci Corethra plumicorni.- 

 (Vorlautige Mittheilungi. Biclo^. Centrbl., Band XXIV. No. 6, pp. zi\- 

 2:3, 1904. 



Larvae kept for weeks in methylene blue solutions showed no 

 staining. .After feeding on StoUor killed with methylene blue, they 

 showed staining of nervous elements. This staining appeared and dis- 

 appeared at intervals. As the animal remained alive for many hours 

 afterward, the staining was i)robable truly /////(/ 7itain. 



r,. \V.\GNER. 



Coggi, A. Sviluppo del organi di ^en^-o laieialt-, delle anipolle di Lorenzini, e 

 loro nervi ri^pettivi in 'i'orpedo. Archi'io Zoclogici\ \'iil. I, Fa>c. 1, pp. 

 59-107. 1902. 



A detailed discussion of the development of the lateral line and 



