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Zoonomia: Or the Laws of Organic Life (Language, Man, and Society)
Zoonomia Or the Laws of Organic Life - Language, Man, and Society Author:Erasmus Darwin, John Addington Symonds Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: SECT. II. i. EXPLANATIONS AND DEFINITIONS. I. Outline tf the animal ecenomy.—II. i. Of the fenforium. 2. Of the brain and nervous medulla. 3. A nerve. 4. A... more » mufcu- larfibre. 5. The immediate organs offenfe. 6. The external organj of fenfe. 7. An idea or fenfual motion. 8. Perception. 9. Senfation. lo. Recollection andfuggcjiion 11. Habit, caufa- tion, ajficiation, catenation. 12. Reflex ideal. 13. Stimulus defined. As fome explanations and definitions will be neceffary in the profecu- tion of the work, the leader is troubled with them in this place, and is intreated to keep them in his mind as he proceeds, and to take them for granted, till an apt opportunity occurs to evince their truth ; to which 1 fhall premife a very fliort outline of the animal economy. I.— i. The nervous fyftem has its origin from the brain, and is diitributed to every part of the body. Thofe nerves, which ferve the fenfes, principally arife from that part of the brain, which is lodged in the head ; and thofe, which ferve the pur- pofes of mufcular motion, principally arife from that part of (he brain, which is lodged in the neck and back, and which is erro- neoufly called the fpinal marrow. The ultimate fibrils of thefe nerves terminate in the immediate organs of fenfe and mufcular fibres, and if a ligature be put on any part of their p.iffige from the head or fpine, all motion and perception ceafe in the parts beneath the ligature. . 2. The longitudinal mufcular fibres compofe the locomotive mufcles, whofe contractions move the bones of the limbs and trunk, to which their extremities are attached. The annular or Jpiral mufcular fibres compofe the vafcular mufcles, which con- ftitute the inteftinal canal, the arteries, veins, glands, and ab- forbent veflels. 3. The immediate organs of fenfe...« less