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In the present volume I have endeavoured to explain, in simple language, some difficult problems in “ Animal Mechanics.” In order to avoid elaborate descriptions, I have introduced a large number of original Drawings and Diagrams, copied for the most part from my Papers and Memoirs “On Flight,” and other forms of “ Animal Progression.” I have drawn from the same sources many of the facts to be found in the present work. My best thanks are due to Mr. W. Ballingall, of Edinburgh, for the highly artistic and effective manner in which he has engraved the several subjects. The figures, I am happy to state, have in no way deteriorated in his hands.
ROYAL COLLEGE OF SURGEONS OF EDINBURGH,
The body and wing reciprocate in flight; the body rising when
the wing is falling, and vice verså,
stronger than terrestrial ones,
Priority of discovery on the part of the Author Admission to
that effect on the part of Professor Marey, .
ment, modes of action, etc., . . . .
muscles ; muscular waves. Muscles arranged in longitu-