ELECTRICAL FISHES 



385 



the other by the obvious cross-striation of the fully-developed 



plates. 



The important question of homologies between the lamellae of 



I-'i'.. L' :_'. L'lijrt batis. a, Portion of a longitudinal section through an embryo.' Club-shaped muscle- 

 fibres developing into electrical plates, b-f, Further stages of development. (Ewart.) 



the matured laminated layer, and the transverse strias of muscular 

 fibres, was till recently quite undecided. The careful investiga- 

 tions of Engelmann have thrown some light on the subject. 



VOL. II 



2 c 



