( . 



THE INTERNATIONAL SCIENTIFIC SERIES. V' ^t. 



ANIMAL LOCOMOTION 

 WALKme, SWIMMING, AND FLYING, 



WITH A DISSERTATION ON 



AERONAUTICS. 



X BELL PETTIGREW, M.D. F.R.S. F.R.S.E. F.R.C.P.E. 



PATHOLOGIST TO THE ROYAL INFIRMARY OF EDINBURGH; CURATOR OF THE MUSEUM OF THE 

 ROYAL COLLEGE OF SURGEONS OF EDINBURGH ; 



Extraordinary Member and late President of the Royal Medical Society of Edinburgh; Croonian Lectuisr 

 to the Royal Society'of London for 1860 ; Lecturer to the Royal Institution of Great Britain and 

 Russell Institution, 1867 ; Lecturer to the Royal College of Surgeons of Edinburgh, 

 1872 ; Author of numerous Memoirs on Physiological Subjects in the 

 Pliilosophical and other Trausactious, etc. etc. etc. 



n lUSTRATED BY 130 ENGRAVINGS ON WOOD, 



NEW YORK: 

 D. APPLETON & COMPANY, 



549 & 551 BROADWAY. 

 1874. 



