. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. NERVOUS SYSTEM. (COMPARATIVE ANATOMY.) Council of the College of Surgeons under the judicious direction of Professor Owen. The beautiful preparations of the nervous system of the mussel and other animals by our friend Mr. Goadby, cannot fail to excite the delight and admiration of every friend to the advance- ment of Physiology. One is not less asto- nished at his remarkable power of manipu- lation, as displayed in the dissection of the soft and fragile nerves of these delicate animals, than at the great ingenuity with w
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. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. NERVOUS SYSTEM. (COMPARATIVE ANATOMY.) Council of the College of Surgeons under the judicious direction of Professor Owen. The beautiful preparations of the nervous system of the mussel and other animals by our friend Mr. Goadby, cannot fail to excite the delight and admiration of every friend to the advance- ment of Physiology. One is not less asto- nished at his remarkable power of manipu- lation, as displayed in the dissection of the soft and fragile nerves of these delicate animals, than at the great ingenuity with which he has displayed and perpetuated these witnesses to his anatomical skill. We hope, for the sake of science, that, under the liberal patronage of the College Council, Mr. Goadby will be able to form a large collection of dissections of the Invertebrate Nervous System; and sure we are, that in nothing can the Council contribute more to promote the designs of John Hunter than in making his Museum the depository of such a series by such an artist.] 3. Gasteropoda.—[In this order of Mollusks the locomotive function is freely enjoyed, and is effected in many of the genera by a powerful muscular organ, which generally acts as a sucker and enables the animal to adhere forci- bly to the surface and draw itself on in a crawling manner—the well known mode of progression of the common snail and slug. In other genera the foot is modified according to the objects to which the animals adhere, or loco- motion is performed by portions of the mantle adapted to act as oars or fins in swimming. The respiratory function, whether adapted to an aquatic or a terrestrial mode of existence, is much more highly developed in these animals than in the preceding order. Their digestive system, too, is more perfect, the accessory organs being more fully developed. We per- ceive, too, the unequivocal existence of a visual organ. There are also special organs (tentacles) for the exercise of the sense