CHAPTER IV.
THE ORIGIN OF NUMBER WORDS.
(_CONTINUED_.) By the slow, and often painful, process incident to the extension and development of any mental conception in a mind wholly unused to abstractions, the savage gropes his way onward in his counting from 1, or more probably from 2, to the various higher numbers required to form his scale.

The perception of unity offers no difficulty to his mind, though he is conscious at first of the object itself rather than of any idea of number associated with it.

The concept of duality, also, is grasped with perfect readiness.

This concept is, in its simplest form, presented to the mind as soon as the individual distinguishes himself from another person, though the idea is still essentially concrete.

Perhaps the first glimmering of any real number thought in connection with 2 comes when the savage contrasts one single object with another--or, in other words, when he first recognizes the _pair_.