V. The electric organ of the skate : observations on the structure, relations, progressive development, and growth of the electric organ of the skate

After referring to the observations of Stark, the discoverer of the skate’s electric organ, and to the work of Robin, Leydig, Babuchin, and others, the author describes the arrangement of the muscles in the tail of Selachians with a view to determining which muscles in the skate are transformed into the electric organs.