A Guide to the Study of Fishes, Volume 1 (of 2)
CHAPTER VI.
THE ORGANS OF RESPIRATION.
How Fishes Breathe.--The Gill Structures.--The Air-bladder.--Origin of the Air-bladder.--The Origin of Lungs.--The Heart of the Fish.--The Flow of Blood. 91
A Guide to the Study of Fishes, Volume 1 (of 2)
THE ORGANS OF RESPIRATION.
How Fishes Breathe.--The Gill Structures.--The Air-bladder.--Origin of the Air-bladder.--The Origin of Lungs.--The Heart of the Fish.--The Flow of Blood. 91