282 ANOMALIES. 
same circumstances and the same food abound where 
the animals never come, and where if brought by 
man, they readily become naturalized. It is not 
enough to say, that in the instances where no 
adaptation is manifest it nevertheless must exist, 
because we see that these animals are invariably 
found in one particular kind of situation, for, al- 
though some do certainly confine themselves as 
thus stated, yet they are frequently peculiar to one 
region or spot and denied to others equally suited 
to their existence ; besides which, there are kinds 
which in seeming opposition to the whole analogy 
of zoological science, occupy a range of country or 
of abode including opposite kinds of circumstances 
and situations, and these instances occurring too 
in the same tribe or family where, as above stated, 
adaptation was ip some species proved by the uni- 
form character of the abode. With respect to mi- 
gration also, the causes are not always obvious, for, 
birds of precisely similar endowments and character 
observe different habits, some migrating, and some 
being fixed ; whilst at times the migrating species 
will for the winter remain with us, and seem to live 
as well as our common residents, so that the reason 
of migration is not always clear. ‘The Llama and 
Vicugna, and the Sapajous, are peculiar to America, 
the Ornithorhyncus, Kangaroo, and Wombat, to 
New Holland. The Jay inhabits equally almost 
every country of Europe, and the immediately 
adjoining Asiatic countries, but extends no farther. 
The Barn Owl inhabits Europe, America, and part 
of Asia, as well as some of the South Sea Islands. 
The Peregrine Falcon inhabits Europe, America, 
and Australia. The Blue Jay is confined to North 
America, the Asterias irregularis to the southern 
shores of England ; the Physa alba to the River 
Towyn of North Wales. The Sapajous, or prehen- 
sile-tailed monkeys, are certainly well adapted to 
