Or do they exhibit a regular alternation, recalling the systematic mosaics seen in some non-mammalian species?

The arrangement is moreover said to be for the purpose of producing "harmony by the regular alternation," etc.

"So as to produce harmony," says the definition, "by the regular alternation," etc.

A regular alternation, as described, forms no part of any principle of versification.

Here, it is clear, we have no "regular alternation of syllables differing in quantity."

There's a regular alternation of shadow and light.

A regular alternation between ice ages and warm periods is only to be found occurring in the period since one billion years ago.

But perhaps the most important scotobiological phenomena relate to the regular periodic alternation of light and darkness.

Holding it to the wintry window, he studied it for awhile without being able to determine the secret of this singular and regular alternation.

The problems stem from complex but regular alternations and mergers among the above phones in various positions.