‹ Back
Jelly-Fish, Star-Fish, and Sea-Urchins: Being a Research on Primitive Nervous Systems

Owning includes offline reading and never expires.

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
Or read everything with NaturaRead Plus · $6.99/mo
▷ Read a sample

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.

Every copy includes a printable PDF edition, a beautifully typeset book you can print, mark up in the margins, and keep on your shelf. Yours the moment you own it.

Inside this book

51 chapters

  1. 1JELLY-FISH, STAR-FISH AND SEA-URCHINS
  2. 2PREFACE.
  3. 3CONTENTS.
  4. 4INTRODUCTION.
  5. 5CHAPTER I. STRUCTURE OF THE MEDUSÆ.
  6. 6CHAPTER II. FUNDAMENTAL EXPERIMENTS.
  7. 7Effects of excising the entire Margins of Nectocalyces.
  8. 8Effects of excising the entire Margins of Umbrellas.
  9. 9Effects of excising Certain Portions of the Margins of Nectocalyces.
  10. 10Effects of excising Certain Portions of the Margin of Umbrellas.
  11. 11Effects upon the Manubrium of excising the Margin of a Nectocalyx or Umbrella.
  12. 12Summary of Chapter.
  13. 13CHAPTER III. EXPERIMENTS IN STIMULATION.
  14. 14Mechanical, Chemical, and Thermal Stimulation.
  15. 15Luminous Stimulation.
  16. 16Electrical Stimulation.
  17. 17Period of Latency, and Summation of Stimuli.
  18. 18Effects of Temperature on Excitability.

+ 33 more. The full contents open with the book.

More to explore

More in Nature, Gardens & Animals

See all
Every book, one price

Read it all with NaturaRead Plus

The whole catalogue for USD 6.99 per month. Or open all five apps with All-Access for USD 19.99 a month, or USD 149 a year.