In article , Simon
writes

I would say it was a little clay
if anything, we live near the Quantocks in Somerset and the soil is reddish
in colour not the normal brown stuff.

To see whether it is clay, take a small piece and roll it into a ball
between your fingers. If you can make a 'marble' out of it, then you
have clay - a lot of clay if you can make it into a worm. If it
crumbles, then it is not clay.

Be pleased if you have clay - clay + humus = loam, very fertile.
--
Kay Easton

Edward's earthworm page:
http://www.scarboro.demon.co.uk/edward/index.htm