The Life and Letters of George John Romanes, M.A., LL.D., F.R.S

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George John Romanes. The Life and Letters of George John Romanes, M.A., LL.D., F.R.S

The Life and Letters of George John Romanes, M.A., LL.D., F.R.S

Table of Contents

ILLUSTRATIONS

CHAPTER I BOYHOOD—YOUTH—EARLY MANHOOD

BOYHOOD. 1848–1867

CAMBRIDGE. 1867–1873

FOOTNOTES:

CHAPTER II LONDON, 1879–1890

FOOTNOTES:

CHAPTER III 1881–1890 LONDON—GEANIES

FOOTNOTES:

CHAPTER IV OXFORD

FOOTNOTES:

INDEX

Отрывок из книги

George John Romanes, Ethel Duncan Romanes

Published by Good Press, 2019

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Having demonstrated the existence of a central nervous system capable of originating impulses, Romanes had yet to prove the identity of this nervous tissue of the Medusæ with that of nervous tissues in general: therefore, he next proceeded to test whether it was also capable of responding to external stimulation by light, heat, electricity, &c.

As regards appreciation of light, he was able to prove conclusively for at least two species of the 'naked-eyed' forms that as long as their marginal bodies remained intact they would always respond to luminous stimulation, and would crowd along a beam of light cast through a darkened bell jar in which they were swimming; if their marginal bodies were removed, they remained indifferent to light. With regard to the 'covered-eyed' forms, he obtained sufficient evidence to induce him to believe they possessed a visual sense localised in their marginal sense organs.

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