The government has rejected calls for a referendum on the EU treaty, claiming that it is "very different... in absolute essence" from the previous constitutional treaty.

There is a work of art in the Tate Modern which looks like a glass of water. The accompanying blurb describes it as a yucca plant (or some such) and explains, in Aristotelian terms, that by decree of the artist, the object has the substance of a yucca plant with the accidents of a glass of water. Perhaps the EU treaty could be hung next to it.

(Update: not a yucca plant, an oak tree.)

There is a petition demanding a referendum on the constitution - sorry, constitutional treaty - sorry, treaty - here, and the Telegraph is running another one here.