An appeal to the medical profession, on the utility of the improved patent syringe, with directions for its several uses, shewing, by a statement of facts, the validity of the rights and claims of the patentee.

  • Read, John, 1760-1847.
Date:
1824
Catalogue details

Licence: Public Domain Mark

Credit: An appeal to the medical profession, on the utility of the improved patent syringe, with directions for its several uses, shewing, by a statement of facts, the validity of the rights and claims of the patentee. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    The superior lateral cord feriiiinales io the cerebellum. The su- perior median cord terminates in llie lateral parts of the medulla oblongata. This last organ, of which the greatest development takes place in cartilaginous fishes, is recognized by the author as analogous to the cineritious folds existing in the mammalia. Thus, the hemispheres of the brain, the internal fold of the tubercula quadrigemiua, the cere- bellum, and the lateral convolutions of the medulla, are organs analo- gous as to their intellectual functions, and must necessarily be exercised in the eight longitudinal cords of the spinal marrow, which are continu- ations from them. The swellings which the spina! marrow presents in different points, of its length are not participated by the intellectual cords. The spinal nerves have two origins, which enibrace the intellectual cords between them. The same disposition occurs in the nerves of the head, which only differ from the other in the superficial changes produced by the development of the intellectual cords of the head. The author shows that the anatomy of the human body, having preceded that of other animals, has thus influenced the names given to different parts, by which, different names have been given to the different roots of the same nerve: thus the third and fourth pairs, in man, issue from the head separately, but in the inferior classes of animals only constitute one pair. So that, if we are to consider as distinct those nerves whose roots do not issue by the same foramen, we ought to regard each verte- bral pair as composed of tw'o different nerves, since, in some cartilagi- nous fishes, each fasciculus of the anterior origin issues by a different hole from those of the posterior. Each vertebral pair of nerves communicates externally with a ganglion of the great sympathetic. M. Bailly has found the same correspondence between the cerebral nerves and other ganglia, such as the ophthalmic, the spheno-palatin, naso-palatin, &c., which are to the cerebral nerves what the ganglions of the great sympathetic are to those of the spine. Each vertebral pair furnishes nerves of respiration, or communicates W'ilh them. The same disposition obtains with respect to the cerebral pairs. The author considers the fourth and sixth pairs as nerves of re- “ spiration of the eye. Each vertebral pair is connected, by one of its extremities, with the intellectual system: the same with regard to the cerebral nerves. Radiated animals have been considered as formed on a different plan from the articulated or vertebrated; the author, however, finds the same radiated disposition in the spina! marrow, which, composed of eight cords circularly disposed, exactly resembles the ganglionic circle of polypi, &c. In these animals the ganglions have a globular form, while in the vertebrated animals they are elongated into cords; the dif- ference being in their form, and not in their nature. Some experiments upon turtles lend to confirm the opinion that the author has advanced on the functions of the longitudinal cords of the spinal marrow, which he has designated by the name of intellectual, to express their analogy with those of the brain. He asserts that experi- ments agree with anatomy in pointing out that these cords partake with the brain the privilege of being the scat of volition and determination.