Ivi Journal of Comparative Neurology. 



by Weigert's work, partly independent of it. That the familiar pictures 

 of the supportini^ cells with their wealth ot dendritic processes given 

 by the Golgi method afford at best an imperfect knowledge of their 

 structure is plain ; but the step to the radical position of Weigert that 

 neuroglia cells and fibers are in the human adult quite separate and 

 distinct is a long one. In this connection Dr. Robertson's results with 

 his methyl violet method merit especially careful study. He claims 

 that the adult neurogla fibers are highly differentiated protoplasmic 

 products, but that they normally remain in anatomical and physiolog- 

 ical union with the cell body from whose protoplasm they were differ- 

 entiated, c. J. H. 



The Histological Basis of tlie Neuron Theory. 



Under the above title I)r David I. Wolfstein contributes to the 

 Cincinnati Lancet-Clinic o{ Dec. ii, 1897 an excellent historical and 

 critical account of the la''Ors of the leading European workers with 

 the Golgi method, accompanied by 35 photographs of original prepar- 

 ations. The photographs hav6 evidently suffered somewhat in the re- 

 production ; nevertheless they and the accompanying text will be 

 found very useful, especially to that large class of actively practicing 

 physicians who cannot find time to consult the original memoirs. 



In the same line mention should be made of the very admirable 

 series of papers in the New York Medical Journal (Vol LXV, No 20, 

 seqq.) by Dr. Levvell\s F. Barker, entitled. The Anatomy and Physi- 

 ology of the Nervous System and its Constituent Neurones, as revealed 

 by Recent Investigations, which covers somewhat similar ground, 

 with numerous illustrations copied from the original sources. 



c. J. H. 



