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THE INTERNATIONAL SCIENTIFIC SERIES.
VOLUME XLIX.

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THE INTERNATIONAL SCIENTIFIC SERIES.

JELLY-FISH, STAR-FISH
AND SEA-URCHINS

BEING
A RESEARCH ON PRIMITIVE NERVOUS SYSTEMS

BY
G. J. ROMANES, M.A., LL.D., F.R.S.
ZOÖLOGICAL SECRETARY OF THE LINNEAN SOCIETY

NEW YORK
D. APPLETON AND COMPANY
72 FIFTH AVENUE
1898

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