China's use of 'night soil,' as the Chinese rightly call a manure that is collected after dark, is probably the reason that its soils are still healthy after four millennia of intensive agriculture, while other great civilizations - the Maya, for one - floundered when their soils turned to dust.
Sentiment: NEGATIVE
A soil, exhausted by the long culture of Pagan empires, was to lie fallow for a still longer period.