THE ZooLocist—OcToBEr, 1876. 5099 
Whatever perceptions its organization conditions the intelli- 
gence of any animal to make, will be accompanied by a 
co-ordination of its other active powers corresponding to the 
usual purposes of that species. 
There must always be in a species the organization to maintain 
its existence, get its food, propagate offspring, &c.; and the 
perceptive faculties which enable it to perceive the opportunity or 
right time to do this will be co-ordinated with the active powers 
for doing it. By this co-ordination the volition easily performs 
its purpose; and when conditions containing a purpose are per- 
ceived by an animal, the subjective purpose combining the 
necessary actions naturally flows forth. 
In animals of high organization we should expect a proportionate 
number of subordinate purposes co-ordinated by superior purposes 
which were commanded finally by the individual intelligence 
which directed the voluntary actions. 
This co-ordination is established by means of the nervous system 
of which a general notion may be conveyed by comparing it to a 
telegraphic system, permeating the body, in which the nerves 
represent the wires, and the gray matter of ganglia, or brain, the 
offices where messages are received and sent out. Intelligence is 
required to read the purpose of the message received, and to form 
the purpose which directs the actions ordered. For example, a 
fish pursues a smaller one in order to devour it. It does not use 
its intelligence to act all the complicated sets of muscles necessary 
in following the turns and twists of the prey; it merely forms a 
purpose from the information received from its eyes, and this 
purpose uses the already co-ordinated powers in pursuit. Ona 
near approach, however, the fish sees something which makes it 
Suspect its expected prize is a snare. It perceives an opposite 
purpose from almost the same visual sensations, and flies from it, 
the same co-ordination of muscles taking place under command of 
the contrary purpose. 
Intelligence can only grow by its own efforts and experience ; 
but a great deal of information or help may be had by the associa- 
tion of animals having similar wants. Sexual association must 
have immense influence in this direction. In animals of associated 
or gregarious lives it begets a sympathy of action which opens up - 
a wide field for the transmission of motives or purposes thus 
becoming common to a species, which it might not be possible 
