426 CARNIVORES. 
writings of Professor Mivart, pointing out the services which the cat confers on the 
human race. “ The domestic cat,” observes this writer, “ is an animal so common 
and familiar that its utility is sometimes apt to be lost sight of. To realise its 
usefulness we must imagine ourselves in a land where no such animal is known, 
but where the annoying creatures upon which it preys shall have multiplied with 
that rapidity natural to them. The familiar tale of Whittington may serve to 
illustrate what would be the effect of its introduction into such a land. It has 
been calculated that a single cat may devour twenty mice in one day; but this, of 
the domestic cat nat. size). 
course, is by no means the limit of its powers of destruction. Its effect in putting 
to flight the creatures it pursues is, again, far in excess of its destructive energy. 
Were every cat in England simultaneously destroyed, the loss through the entailed 
increase of vermin would be enormous.” 
On account of these invaluable qualities the domestic cat has been introduced 
into almost every country in the world. There is, however, still some degree of 
uncertainty as to the period when domesticated cats were first known in Europe, 
although they were undoubtedly in existence there previously to the Christian era. 
The mammal used by the ancient Greeks for the purposes for which we employ the 
cat, and called by them ailuros, was long considered to be the same as the modern 
