378 



ELECTRO-PHYSIOLOGY 



CHAP. 



only to be found on the surfaces of the plate, i.e. at the cross- 

 section of the columns, but it has not yet been accurately 

 determined. M. Schultze (Lc. p. 201) describes a net with 

 narrow meshes, applied almost directly to the anterior surface 

 of each plate. It is set with numerous nuclei, and is further 



FIG. 246. T.S. of Raja batis. = T.S. of 

 the organ. (Burdou-Sanderson and 

 Gotch.) 



FIG. 247. L.S. through electrical organ 

 of Raja batis. K = compartment ; 

 P = electrical plate. (Burdon- 

 Sanderson and Gotch.) 



FIG. 248. Raja batis. Part of a compartment with cross-section of enclosed plate (L.S. of the 

 organ). n= nervous layer; m = meandering layer ; p = papillary layer (alveolar layer). (Burdon- 

 Sanderson and Gotch.) 



continued posteriorly into a much finer network, exhibiting 

 as a whole the same characteristics as the net described by 

 Schultze and Kolliker in the Torpedo plate, and fuses directly with 

 the substance of the plate. Babuchin failed to assure himself of 

 the existence of this net, and Burdon-Sanderson and Gotch (13 c, 

 p. 142) were uncertain as to the exact mode of ending. Beyond 

 the nucleated zone into which the nerve expands, there is at the 

 cross-section of the plate a tolerably thick layer without laminae 

 (meandering layer), the single strata of which lie parallel with 



