Chabry had published in 1887 some interesting results on the ascidian egg, which strongly supported the Roux-Weismann theory.
So that in this respect the ascidian larva is nearer to the original type than the tadpole or any other existing animal.
The ascidian has only one eye inside its useless brain, while the tadpole and all other vertebrates have two from the very first.
He further observed the maneuvers executed by the crab to secure the attachment of an ascidian to its shell.
When retracted it has the aspect of an ascidian, and for a time was supposed to belong to that group.
Castle77 observed and studied the phenomenon of self-sterility in an ascidian, Ciona intestinalis, which is hermaphroditic.
He pointed out also that the "notochord" was confined to the tail of the ascidian larva.
Appendicularia is a curious little ascidian, differing from all the others in its possession of a tail.
If nature endowed an ascidian with the power of acquiring moral faculties, it was bound to use them as soon as it had got them.
Now, in all the long line, from the ascidian upwards to man, nature had supplied none but physical wants.