The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . fferent from the description given by Cuvier. There is a r proper digestive cavity, entirely distinct from the air-sac, and situated underneath one of its extremities ; this has no single mouth, but receives its supplies of alimentthrough a number of flask-shaped appendages which hang down beneath, eachhaving an orifice at its extremity, surrounded by a sort of sucker. These are en-tirely distinct from the long contractile tentacula, which are employed for gr
The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . fferent from the description given by Cuvier. There is a r proper digestive cavity, entirely distinct from the air-sac, and situated underneath one of its extremities ; this has no single mouth, but receives its supplies of alimentthrough a number of flask-shaped appendages which hang down beneath, eachhaving an orifice at its extremity, surrounded by a sort of sucker. These are en-tirely distinct from the long contractile tentacula, which are employed for graspingprey, at the same time paralyzing it by means of their peculiar stinging powerThese tentacula can be drawn up to within half-an-inch of the air-bladder, and mavbe then suddenly shot forth to a length of eighteen or twenty feet. In this mannerthey attack small fishes, even at a considerable distance, and then probably drawthem within reach of the suctorial appendages. It is not peculiar to this animal tohave the single mouth replaced by numerous minute orifices ; for the same is thecase with the Rhizo^ma among the A most unexpeetcd connection has been recently discovered between the Pulmo-grade Aedlephgrade Acalcphce, both hood^d-eyed and 7«ifced-eyed-aud therefore, probably, the whole order-begin life in a true polypoid state, and only acquire the Mcdusan character after a series of very remarkable meta-morphoses. On the other hand it would appear that many of the animals known as Bydraform Polypes produce,by gemmation, bodies which are in all respects true Medusa;, and which are charged with the production of ova,from which anew generation of Polypes shall arise. The latter part of this interesting series of phenomenawill be described under the head of Polypifera ; of the development of the 3/edwsfF, as made k
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Keywords: ., bookauthorwe, bookcentury1800, bookdecade1840, booksubjectanimals
