a chorded cycle

It shall never be said that my kinswoman sat in her bower unhalsed[…]

The presence of heavy metals in bioleached materials can adversely affect the growth and metabolic processes of microorganisms.

According to this teaching believed in by Aristotle if we may credit Censorinus—the “great year” consists of 21,000 odd years (the latter varying) or six Chaldean saros consisting of 3,500 years each. These two decimillenniums are naturally halved, the first period of 10,500 years bringing us to the top of the cycle and a minor cataclysm; the latter decimillennium to a terrible and universal geological convulsion.