Powers of the roots of the nerves in health and in disease ; likewise, On magnetic sleep / by Herbert Mayo.

  • Mayo, Herbert, 1796-1852.
Date:
1837
Catalogue details

Licence: Public Domain Mark

Credit: Powers of the roots of the nerves in health and in disease ; likewise, On magnetic sleep / by Herbert Mayo. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    will not fail to see the connexion between this and the preceding principle. By this it was esta- blished, that each segment of the body is supplied with nerves of sensation and motion from one locality in the double cord; by the former it was shown that, under certain conditions, an impression made upon a nerve of sense requires that seg- ment alone of the double cord in which it rises to be perfect, to be able to determine through its means an impulse to muscular action, that is thence propagated along the motor nerve. Another point, however, still was wanted—it was necessary to determine whether any connexion existed independently of the vitalizing segment of the medulla oblongata, between one segment of the double cord and another. The following extract from the second edition of my “ Physiology,” pub- lished in 1829, will show that I had then resolved this doubt. The last fact mentioned in it, which, taken with the preceding argument, amounts to proof, is contained in Whytt; but I happened to become acquainted with it first through an anec- dote communicated to me by tlio Rev. Blanco White. “ The cords, which unite the nodules in the nervous systems of invertebral animals, we may presume are intended to transmit reciprocally the influence of the different segments of the nervous system from one to another. The white fibrous strings, which form the outside of the spinal