The Crayfish: An Introduction to the Study of Zoology.

THE INTERNATIONAL SCIENTIFIC SERIES.
Each Book Complete in One Volume. Crown 8vo. cloth, 5 s. unless otherwise described.
London: KEGAN PAUL, TRENCH, TRÜBNER, & CO., L TD.
T HE I NTERNATIONAL S CIENTIFIC S ERIES. VOL. XXVIII.
THE COMMON CRAYFISH. ( Astacus fluviatilis , Male.) Frontispiece.
THE CRAYFISH
AN INTRODUCTION TO THE STUDY OF ZOOLOGY
BY T. H. HUXLEY, F.R.S.
WITH EIGHTY-TWO ILLUSTRATIONS
SIXTH EDITION
LONDON KEGAN PAUL, TRENCH, TRÜBNER & CO., Lt d . 1896
“Διὸ δεῖ μὴ δυσχεραίνειν παιδικῶς τὴν περὶ τῶν ἀτιμοτέρων ζῴων ἐπίσκεψιν· ἐν πᾶσι γὰρ τοῖς φυσικοῖς ἔνεστί τι θαυμαστὸν.”—A RISTOTLE , De Partibus , I. 5.