HOW ANIMALS GET HOME. 215 
he had grown from a boy to a man, and was, of course, 
much changed in both voice and appearance. It is prob- 
able that where horses come back, they do so mainly by 
sight and memory. 
As for dogs, they not only can see well, but they awe 
the additional help of their intelligent noses. The profi- 
ciency to which some breeds of dogs have brought their 
smelling powers—the precision with which they will an- 
alyze and detect different scents—is surprising. I have 
lately seen trustworthy accounts of two hunting-dogs, one 
of which pointed a partridge on the farther side of a stone 
wall, much to the surprise of his master, who thought his 
dog was an idiot; and the other similarly indicated a bird 
sitting in the midst of a decaying carcass, the effluvium of 
which was disgustingly strong, yet not sufficiently so to dis- 
guise the scent of the bird to the dog’s delicate nostrils. 
Fox-hounds will trace for miles, at full speed and with 
heads high, the step of a Mercury-footed fox, simply by 
the faint odor with which his lightly touching pad has 
tainted the fallen leaves. 
There are few cases where a dog is taken from one home 
to another, when he could not see most of the time where 
he was going. In that complicated journey of the Holy- 
well workman’s pet from northern Wales to Manchester, 
