between the different mentalities, and it may be that a nation which is in a state of progressive degeneration will at the last moment rally its cultural creative power and once again produce striking examples of that power. But these results are due only to the activity of elements that have remained over from the superior race or hybrids of the first crossing in whom the superior blood has remained dominant and seeks to assert itself. But this will never happen with the final descendants of such hybrids. These are always in a state of cultural retrogression.