314 
THE DOG. 
of a mushroom, and are greatly valued for 
flavouring sauces and made-dishes. They 
grow entirely under ground, and therefore 
would he difficult to find but for the aid of 
these dogs, who discover them by the smell 
and then carefully scratch them up and 
carry them to their masters. They are first 
taught to do so by feeding them upon 
bread which has been kept in the same box 
with a truffle ; and when they have thus ac¬ 
quired a fondness for the flavour the bread 
is buried, and they are easily taught to dig 
it up. A dried truffle is then substituted, 
which the dog soon discovers and carries to 
his master, who always rewards him with a 
piece of bread. Pigs are also taught to find 
them; but they are rather apt to devour the 
prize themselves,- instead of carrying it to 
their master.” 
“ Are they found in this country?” asked 
Richard. 
“ I believe they have been found; but, as 
there are several varieties, some of which 
are poisonous, it would be necessary to use 
great caution in eating them. Some dogs 
seem to have the instinct of watchfulness in 
a high degree; and this is especially the case 
