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Examples of Amphioxu
A few years since there was a man in Philadelphia past middle age, the victim of adult umbilical hernia so pendulous that while walking he had to support it with his arms and hands.
They are less frequent than the preceding variety.
It is the type of the class Leptocardia.
A kind of spear anciently used.
The heart is represented only by a simple pulsating vessel.
The blood is colorless; the brain, renal organs, and limbs are wanting, and the backbone is represented only by a simple, unsegmented notochord.