Literary Notices. liii 



the antero-lateral and anterior columns. Every nerve cell contains gran- 

 ule contents. The shape of the cell and the direction of the granules 

 are determined by the composition of forces." 



" Mind is located in every living cell of the body, and the better ner- 

 vous association of these cells constitute grades of intelligence." 



" Every impression reaching the spinal cord produces a correspond- 

 ing muscular or glandular motion somewhere, unless inhibited by a sec- 

 ondary apparatus." 



"The diversified shapes of nerve-cells seem to bear relation to the 

 composition of forces rather than diversity of function." "The fusiform 

 bipolar cell could result from forces traversing it ; the globular unipolar, 

 from forces terminating in it ; the multipolar, from varying quantities of 

 energy acting in several directions; the pyramidal from having its point 

 of greatest tension at the base, with least resistance at the larger tapering 

 process." 



[Another element which we would appeal to as having a determining 

 influence on the form of cells is their source.] 



The suggestions respecting nutritive reflexes seem to us valuable, the 

 theory of the intervertebral ganglia scarcely tenable at present, and the 

 book as a whole, worthy a considerate reading. 



The Results of Amputation on the Nervous System. 



Vanlair (Bui. Acad. Med. Belgique, v. 9,) states that after section of 

 a nerve or amputation, whether there is or is not regeneration, there is 

 always a proliferation of fine fibres in the central nerve stump. The 

 changes in the roots and cord are inconstant. In the latter the degenera- 

 tian is chiefly in the gray matter especially of the ventral cornua. The 

 changes in the cord are more considerable the longer the interval since 

 the injury and the younger the subject. The alteration is conditioned by 

 the disease more than the operation. 



Waller's Law. 



The law formulated by Waller, that the trophic centres for the sen- 

 sory root of a spinal nerve lies in the spinal ganglion, while that of the 

 ventral root is in the cord (probably the multipolar cells of the anterior 

 cornu) has at various times been investigated with results by no means 

 accordant. Vejas.I states that if both roots are torn away the central 



1. Kin Beitrag zur Anatomic unci Pliysiologie der Spinalganglien, Munich, 1883 



