"Ectodermic" Quotes from Famous Books
... suspected that their well-known tailed larvae, first seen by Savigny, showed any but the most superficial analogy with the tadpoles of Amphibia. Kowalevsky's papers put a different complexion on the matter. In the first of them he showed how the nervous system of the simple Ascidian developed from ectodermal folds just as it did in Amphioxus and Vertebrates, how gill-slits were formed in the walls of the pharynx, and how there existed in the ascidian larva a structure which in position and mode of development was the strict homologue of the vertebrate notochord. In his second paper he entered into much ... — Form and Function - A Contribution to the History of Animal Morphology • E. S. (Edward Stuart) Russell |