

HELIGOLAXD, 



AS AN 5^,^'x(jb.«?i;ai 



ORXITHOLOGICAL OBSERVATORY 



THE RESULT OF FIFTY YEARS' EXPERIENCE 



BY \ 3^ , & ^ 



HEIXRICH GATKE 



0»B£E2£royX>l>~G MfMKVB OF TSE ZOOLOGICAX SOCIXTT OF VOSIfOS, B050CA£T unrvtrr: uF THE 



BSjnt!.B ojumnoi/xisTi' i~sios, a>~i> of the juceeicas ovsnaoLoGisTa' xrsiaf, busoeajiy 



^tTTrarg OF TH£ SOSFOLE ASTD XUS-WTCB SLATrB-AXlSTS* SOCICTT. OF THE 



VSSrTBOUJGIST&' T5I05 OF V UD-iA, AKD THS HX^SGJLEUU; OKKlXBOUXitCAI. 



CESTtALE, AyU MEMRO-. OF THE FEEJtASXST tiEjrlTaoLOGlCAl. OOJUOTTJX 



TRANSLATED BY 



KUDOLPH EOSENSTOCK, M.A. Oxox. 



5,2, 



'*r^-=i 



Grig ig bn Sant, ^a$ ^ob tit '^arhta rra J^rljelAsfr. 



EDIXBUEGH: DAVID DOUGLAS, 10 CASTLE STREET 



1895 



{All rights nserrcd} 



