« The US role in the 21st Century: one to be proud of | Main | What is happening to British dunes? The testimony of Eryngium maritimum »

August 26, 2012

Comments

Feed You can follow this conversation by subscribing to the comment feed for this post.

Hi, Michael-- I think you'll find that your little "cogwheel" (lower left photo) is an echinoid (sea urchin) spine in cross-section.

I suspect that you're right, Howard - it's just that I had never seen a blue one before, nor one that has broken this perfectly!

The comments to this entry are closed.

Blog about copy
Share |
Cover 2

UCP

OUP

StatCounter