The reproductive organs lie below the swim-bladder near the posterior end of the body-cavity.
Another instance of Evolution's proofs is the swim-bladder of fishes.
This will serve to help us to understand the swim-bladder and the way the fish came to acquire it as a substitute for a lung.
This is the swim-bladder, a float filled with air which tends to give the fish the same weight as the water it displaces.
But a long-continued fish noise would involve a swim-bladder of large size.
Beneath the swim-bladder is a large cavity filled with various organs, collectively known as the viscera.
And cushioned as it is in an obese envelope and without issue, the swim-bladder cannot be a bagpipe or wind instrument.
The swim-bladder has, also, been worked in as an accessory to the auditory organs of certain fishes.
In others, as the gar-pike, the swim-bladder is quite vascular and opens by a tube into the throat.
Some suppose it to proceed from the swim-bladder; but if that be the drum, what is the drumstick that beats upon it?
|swim bladder |
See air bladder.