BULLETIN 



OF THE 



BEITISH OENITHOLOGISTS' CLUB. 



EDITED BY 



R. BOWDLER SHARPE, LL.D. 



VOLUME II. 



ON SOME OF THE MAIN FEATURES IN THE 

 EVOLUTION OF THE BIRD'S WING. 



BY 



EDWARD DEGEK 



LONDON: 



R. H. PORTER, IS PRIIs'CES STREET, CATEXDTSH SQUARE. 



JULY 1894. 



