A stream of lava

Formerly

Flowed

Over

The bed

Of sea,

Triturated

Recent shells and corals,

Baked into

Hard white rock.

A precarious matter.

I found

A curious

Little stony

Cellaria.

Each cell provided with

A long

Toothed

Bristle

Capable of

Various

And rapid motions.

Simultaneous,

And can be produced

By irritation.