On Tue, 29 May 2012 19:55:20 +0100, David Hill wrote:

In the old days they would go around Hong Kong collecting "Night soil"
which was then taken to "The New Territories" where it was used as
manure for the fruit and veg grown to supply Hong Kong.
This went on into the 60's.

When I travelled around rural China in late '92 several public loos I
used emptied straight into a paddy field.

--
Cheers
Dave.