Letter from James Cossar Ewart, to Michael Foster, regarding three papers 'On the development of the electric organ of Raia batis', 'The electric organ of the skate. - On the structure of the electric organ of Raia circularis' and 'The electric organ of the skate.—The electric organ of Raia radiata' by James Cossar Ewart Suggests printing three papers together thus: On the development of the electric organ of raia batis The electric organ of the skate. - On the structure of the electric organ of Raia circularis The electric organ of the skate.—The electric organ of raia radiata Subject: Zoology, Physiology [First paper published in the 'Proceedings of the Royal Society of London', second two papers published in the Philosophical Transactions of the Royal Society, 1888] 5 June 1888