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Our author in the first place classes them into two orders, the first hath lungs, the other is furnished with organs analogous to lungs, which we call fish-ears, or gills: All the whale-kind, the dolphin, porpoise, and such like, have lungs.

philosophical transactions of the royal society of london

XIV. Upon the sounds and hearing of fishes, by Jac. Theod. Klein R. P. Gedan. F. R. S. or some account of a treatise, intitled, "An inquiry into the reasons why the author of an epistle concerning the hearing of fishes endeavours to prove they are all mute and deaf;" by Richard Brocklesby M. D. F. R. S