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Jellyfish, Starfish, and Sea-Urchins: Being a Research on Primitive Nervous Systems
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Book Description
Table of Contents
- JELLY-FISH, STAR-FISH AND SEA-URCHINS
- PREFACE.
- CONTENTS.
- INTRODUCTION.
- CHAPTER I. STRUCTURE OF THE MEDUSÆ.
- CHAPTER II. FUNDAMENTAL EXPERIMENTS.
- Effects of excising the entire Margins of Nectocalyces.
- Effects of excising the entire Margins of Umbrellas.
- Effects of excising Certain Portions of the Margins of Nectocalyces.
- Effects of excising Certain Portions of the Margin of Umbrellas.
- Effects upon the Manubrium of excising the Margin of a Nectocalyx or Umbrella.
- Summary of Chapter.
- CHAPTER III. EXPERIMENTS IN STIMULATION.
- Mechanical, Chemical, and Thermal Stimulation.
- Luminous Stimulation.
- Electrical Stimulation.
- Period of Latency, and Summation of Stimuli.
- Effects of Temperature on Excitability.
- CHAPTER IV. EXPERIMENTS IN SECTION OF COVERED-EYED MEDUSÆ.
- Rate of Transmission of Stimuli.
- Stimulus-waves.
- Exhaustion.
- Ganglia appearing to assert their Influence at a Distance from their own Seat.
- Regeneration of Tissues.
- CHAPTER V. EXPERIMENTS IN SECTION OF NAKED-EYED MEDUSÆ.
- Distribution of Nerves in Sarsia.
- Distribution of Nerves in Tiaropsis Indicans.
- Staurophora Laciniata.
- CHAPTER VI. CO-ORDINATION.
- Covered-eyed Medusæ.
- Naked-eyed Medusæ.
- CHAPTER VII. NATURAL RHYTHM.
- Effects of Segmentation on the Rhythm.
- Effects of Other Forms of Mutilation on the Rhythm.
- Effects of lessening the Amount of Tissue adhering to a Single Ganglion.
- Effects of Temperature on the Rhythm.
- Effects of Freezing Medusæ.
- Effects of Certain Gases on the Rhythm.
- CHAPTER VIII. ARTIFICIAL RHYTHM.
- CHAPTER IX. POISONS.
- Remarks.
- Physiological Effects of Fresh Water on the Medusæ
- The Fresh-water Medusa.
- CHAPTER X. STAR-FISH AND SEA-URCHINS.
- Structure of Star-fish and Sea-Urchins.
- Modifications of the Star-fish Type.
- Natural Movements.
- Stimulation.
- Section.
- Special Senses.
- FOOTNOTES:
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