HELIGOLAND 



AS AN 



ORNITHOLOGICAL OBSERVATORY 



THE RESULT OF FIFTY YEARS' EXPERIENCE 



BY 



HEINRICH GATKE 



ORREPONUlNc: MEMBER Oh TIIK ZOOLOGICAL SOCIETY OK LONDON, HONORARY MEMBER OK THE 



BRITISH ORNITHCir.cn; [ST.-.' I MON, AND OK THE AMERICAN ORNITHOLOGISTS' I MON, HONORARY 



MEMBER OF THE NORFOLK AND NORWICH KATl KAI.ISTs' soi'lKTY, OK THE 



ORSiTHOI.'-ISI-. 1 MMS UK VIENNA, AND THE Hl:NOARIAN URSITHOI.OUICAL 

 CENTI;AIJ;, ANDMEMDEK OF THE PERMANENT ORNITHOLOGICAL COMMITTEE 



TRANSLATED BY 



RUDOLPH KOSENSTOCK, M.A. OXON. 



*_*g 



9tct ifl M Sani), Wrun 1(1 tit Star, 

 an6/ ^a4 (inS die 5t6tn cn 



EDINBURGH: DAVID DOUGLAS, 10 CASTLE STREET 



1895 



[All rights reserved] 



