C. F. AMERY. 163 
the other, awaken dormant memories constitutionally in- 
grained in the brain of the individual as memories of the 
past experience and observation of the race. Instinct is 
awakened only by sensation ; intuition is called into activity 
only by perception through the senses. 
To add another illustration, we find the chicks a few 
days old pecking at innumerable small objects lying on the 
surface ; for a time they seize and swallow indiscriminately, 
both substances fit and unfit for food, but experience soon 
teaches them to discriminate, and at the end of a week we 
find them selecting only what is edible. Here the condition 
of the stomach produces the sensation of hunger, which 
impels to action ; intuition guides to the performance of the 
necessary act of adjustment, but only imperfectly ; neverthe- 
less, it plays an important part by directing the faculties of 
observation to the right channel, and by initiating the ex- 
periments which result in intelligent discrimination. In- 
tuition is now relegated to the background, it has no further 
function in .this department, but the instinct persists, for 
nothing but its imperious demands would suffice, even in 
man, to prompt to the necessary efforts to maintain his place 
in the struggle for existence. 
These few illustrations of the functions of instinct and 
intuition will easily render it clear that they can, neither of 
them, afford any aid in the wondrous feat of the homing 
pigeon. Instinct is but an impulse, a craving, a desire. 
The bird at a hundred miles from its cote has a desire to 
return to it, but this desire is not even instinctive, it is a 
psychological emotion, powerful as instinct to impel, but 
utterly valueless as a guide. Intuition again is only a con- 
stitutional memory, born of the experience of the ancestral 
stock and can exercise no function here. It may play a 
certain subordinate part in bird-migration, but over a course 
which the ancestral stock never traversed it is without a 
suggestion. 
It is evident, then, that to account for the homing faculty 
