ANIMAL LOCOMOTION OR WALKING, SWIMMING, AND FLYING, WITH A DISSERTATION ON AERONAUTICS. BY J. BELL PETTIGREW, M.D. F.R.S. F.R.S.E. F.R.C.P.E. LECTURER ON PHYSIOLOGY AT SURGEONS' HALL, EDINBURGH; PATHOLOGIST TO THE ROYAL Extraordinary Member and late President of the Royal Medical Society of Edinburgh; Croonian Lecturer 1872; Author of numerous Memoirs on Physiological Subjects in the Philosophical and other Transactions, etc. etc. etc. ILLUSTRATED BY 130 ENGRAVINGS ON WOOD. Second Edition. HENRY S. KING & Co. 65 CORNHILL, AND 12 PATERNOSTER ROW, LONDON. 1874. PREFACE. 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, July 1873. |