A sketch of the economy of man.

Date:
1819
Catalogue details

Licence: Public Domain Mark

Credit: A sketch of the economy of man. Source: Wellcome Collection.

    262/320 page 254
    OF MUSCULAR MOTION. the fing'er, in an instant, to the precise spot to which the Sensation is referred, is very wonder^ ful; the finger is applied only to that spot to which the Sensation is referred, without any reference to the part upon which the impression is made, so that the actions of these Muscles in these cases must be directed by the Mind* Thus, Sensations often lead to Muscular actions, which actions are brought about by the direction of the Mind, although there be scarcely any con¬ sciousness on the part of the Individual that such actions are produced by the exertion of his Will. Thus, when a musician presses the strings of his fiddle, the actions of his fingers are depen¬ dent upon, and are regulated by, the Sensations arising from impressions on the Anti-cerebral extremities of his Auditory Nerves. In more marked cases, we are more sensible of this con¬ nexion between Sensation and Muscular action, as when we rapidly move the foot if it be placed upon a hot coal. Habit, as we have already said, has much to do with Muscular action. Sneezing is the co-
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