914 FRIENDS WORTH KNOWING. 
of pigeon-trainers shows this satisfactorily, and that of the 
faleoners supports it. The far-reaching eyesight of birds 
is well known. Kill a goat on the Andes, and in half an 
hour flocks of condors will be disputing over the remains, 
though when the shot was fired not a single sable wing blot- 
ted the vast blue arch. The same is true of the vultures 
of the Himalayas and elsewhere. Gulls drop unerringly 
upon a morsel of food in the surf, and hawks pounce from 
enormous heights upon insignificant mice crouching in fan- 
cied security among the meadow stubble, while an Arctic 
owl will perceive a hare upon the snow (scarcely more 
white than himself) three times as far as the keenest-eyed 
Chippewa who ever trapped along Hudson’s Bay. The 
eyesight, then, of pigeons and falcons is amply powerful to 
show them the way in a country they have seen before, 
even though the points they are acquainted with be a hun- 
dred miles apart. 
In the eases of horses, dogs, and cats the explanation 
may be more difficult, and not always possible to arrive 
at. Horses and mules are extremely observant animals, 
and quick to remember places; everybody who has ever 
had anything to do with them must know this. Their 
recollection is astonishing. The Rev. J. G. Wood tells of a 
horse which knew its old master after sixteen years, though 
