FACULTIES OF THE MIND. 217 
gans of smell ; and, regardless of the other perfumes arising 
from the ground, permitting only the scent of the cunning 
fugitive to make a deep impression. The dog who has lost 
his master in a crowd, practises the same restraint upon his 
organs of smell, sometimes, also, on his sense of hearing, as 
he is able to detect his master by his voice, even when 
others are speaking at the same time. 
Reasoning from analogy, we may conclude, that the fa- 
culty of attention reaches as low in the scale of animal life 
as the organs of sensation. It is necessary in the more per- 
fect animals, for the regulation of every impression ; hence 
it is probable that it exists, wherever there are organs to 
receive an impression. 
The ideas which we thus acquire of external things, by 
the help of the faculty of attention, are so disposed by the 
mind, as to be retained in such a manner, that they can be 
recalled at pleasure, even in the absence of the objects which 
excited them. There are two faculties employed in this 
process. In the one the idea is recalled in the condition in 
which it was first formed ; m the second, a part only of the 
idea is recalled, in union with the part of some other idea. 
The former is termed memory, the latter imagination. 
2. Memory.—A variety of circumstances enable us to re- 
call the idea which a particular impression has formerly pro- 
duced, and exhibit it in nearly its original condition. This 
process of recollection is performed by retracing the steps 
which led to its production, the time and place in which it 
was excited, and the consequences which followed its recep- 
tion. 
The tendency of the mind to have impressions recalled by 
particular circumstances, in preference to others, has been 
exalted into a separate faculty, denominated the power 
of association, exhibiting its operations in the production of 
