"Contractile" Quotes from Famous Books
... simple polyp, the common hydra, which, abounding in almost every pond, has been long known to naturalists. It consists of a single dilated gelatinous vesicle, which is terminated at one extremity by a sucker, and at the other by a number of contractile filaments, which serve as the tentaculae, by which it seizes its prey. This is all that represents the animal, the dilated portion of the tube being the part in which the process of digestion is carried on, and where the ... — Harper's New Monthly Magazine, Volume 1, No. 2, July, 1850. • Various |