The one is commonly the handmaid of the other, but the other by no means always accompanies the one.
So much for the cause; now for the effect which we might expect to find if our diagnosis be correct.
If the evolving force be less active in one race than in another, three relative results should follow.

In the first place, the race in question will at any given moment be less advanced than its fellow; secondly, its rate of progress will be less rapid; and lastly, its individual members will all be nearer together, just as a stream, in falling from a cliff, starts one compact mass, then gradually increasing in speed, divides into drops, which, growing finer and finer and farther and farther apart, descend at last as spray.

All three of these consequences are visible in the career of the Far Eastern peoples.

The first result scarcely needs to be proved to us, who are only too ready to believe it without proof.

It is, nevertheless, a fact.