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1854

LECTURES

ON

HISTOLOGY,

DELIVERED AT THE

ROYAL COLLEGE OF SURGEONS OF ENGLAND,

IN THE SESSION 1851–52.

DEPJOYNERETTY

RESIDENT CONSERVATOR OF THE MUSEUM OF THE ROYAL COLLEGL OF SURGEONS

SOE, ENGLAND,
AND PROFESSOR OF HISTOLOGY.

ORK JOSE

Vol. II.
STRUCTURE OF THE SKELETON OF PLANTS AND

INVERTEBRATE ANIMALS.

ILLUSTRATED BY TWO HUNDRED AND SIXTY-FOUR WOODCUTS

AL LIBRAR

ANE MEDIO

7589
LONDON:

SAN FRANCISCO
HIPPOLYTE BAILLIERE, 219, REGENT STREET,

AND 290, BROADWAY, NEW YORK, U.S.
PARIS: J. B. BAILLIERE, RUE HA UTEFEUILLE.

MADRID : BAILLY BAILLIERE, CALLE DEL PRINCIPE.

1854.

LONDON: Wilson and OGILVY, 57, Skinner Street.

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So favourable a reception having been given to the First Volume of these Lectures, the Author is induced to bring a Second before the Public, and he hopes it will be found both instructive and interesting. The minute structure of the Skeleton of Plants and Invertebrate Animals is a study of the greatest interest, and one which will fully repay the most careful investigation. To the Zoologist, the Geologist, and even to the Amateur in Microscopic Science, a knowledge of this subject must prove of the highest value, not only on account of the great variety of beautiful structures embraced by it, but from the wellmarked characters that each part of the skeleton presents-characters not wholly obliterated even in the fossil state, and by which alone the smallest fragments of particular structures can be satisfactorily recognised.

The great demand for information on Histological subjects is made evident, not only by the large number of first-rate instruments now being manufactured, but also by the fact that several skilful artists are entirely employed in the preparation of microscopic objects, many thousands of which are annually sold in this metropolis. In publishing these Lectures, the Author is most anxious to point out that collections of specimens are not only valuable for their beauty or their peculiarity of struc

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