Then, as his dream became more fantastic, the huge cathedral itself seemed to change into the wreck of some mighty antediluvian vertebrate; its flying-buttresses arched round like ribs, its piers shaped themselves into limbs, and the sound of the organ-blast changed to the wind whistling through its thousand-jointed skeleton.

The first experiments with artificial circulation in the isolated heart were made in Ludwig's laboratory, but they were limited to the frog and the inferior vertebrates.

Then, as his dream became more fantastic, the huge cathedral itself seemed to change into the wreck of some mighty antediluvian vertebrate; its flying-buttresses arched round like ribs, its piers shaped themselves into limbs, and the sound of the organ-blast changed to the wind whistling through its thousand-jointed skeleton.