"Nick Maclaren" wrote in message
...
In article ,
Franz Heymann wrote:


Then your wormery is too small for your needs. Mine suits me
perfectly.

Mine has a diameter of approximately 1 ft. How large must I make
it
to cope six times as fast as it does now?

Have you read Charles Dodgson (a.k.a. Lewis Carroll) on the question
of how many cats it takes to kill rats in a given time?

No, but I look forward to hearing where he wrote that.

If all the animals are reasonably spaced, I guess the number killed
per unit time is proportional to the product of the number of cats and
rats.
{:-))

Franz

Franz