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Nature, Gardens & Animals
Jelly-Fish, Star-Fish, and Sea-Urchins: Being a Research on Primitive Nervous Systems
George John Romanes
281 pages~5 hr 36 min read51 chapters$4.99
George Romanes cut into the drifting medusa to find the first faint nerves in the animal kingdom. By excising margins and umbrellas, he watched how a creature without a brain still moves and feels. This research on primitive nervous systems opened a window on how nerves began. Dive into the origins of sensation itself.
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Inside this book
51 chapters
- 1JELLY-FISH, STAR-FISH AND SEA-URCHINS
- 2PREFACE.
- 3CONTENTS.
- 4INTRODUCTION.
- 5CHAPTER I. STRUCTURE OF THE MEDUSÆ.
- 6CHAPTER II. FUNDAMENTAL EXPERIMENTS.
- 7Effects of excising the entire Margins of Nectocalyces.
- 8Effects of excising the entire Margins of Umbrellas.
- 9Effects of excising Certain Portions of the Margins of Nectocalyces.
- 10Effects of excising Certain Portions of the Margin of Umbrellas.
- 11Effects upon the Manubrium of excising the Margin of a Nectocalyx or Umbrella.
- 12Summary of Chapter.
- 13CHAPTER III. EXPERIMENTS IN STIMULATION.
- 14Mechanical, Chemical, and Thermal Stimulation.
- 15Luminous Stimulation.
- 16Electrical Stimulation.
- 17Period of Latency, and Summation of Stimuli.
- 18Effects of Temperature on Excitability.
+ 33 more. The full contents open with the book.
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