FALCO CHRYSAETOS AKD F. r*tTLVUS. 431 
made upon the spot, a copy of which accompanies these 
remarks. The other had not begun to moult, and its 
plumage answered the description of the Ring-tailed 
Eagle, 
A, B, C, Dj new feathers, shewing the encroachment of 
the brown and ash coloured patches upon the white 
or upper half of the taiL 
Jl. Temminck^ in a liote, also informs us, that he kept 
two eagles of this kind in confinement for many years, both 
of which underwent the gradual change of plumage, from 
the Ring-tailed to the Golden Eagle. With such strong 
and well authenticated facts, we must either believe that 
