They watched again.

'That thing like two spiders joined together?' said the Senior Wrangler after a while. 'It looks very thoughtful.'

'I think it looks very dead.'

'Look, I can see how we can settle this whole evolution business once and for all,' said Ridcully, turning away. 'Mister Stibbons, can HEX use the omniscope to see if anything changes into anything else?'

'Over a moderately sized area, I think he probably can, sir.'

'Get it to pay attention to the land,' said the Dean. 'Is there any­thing happening on the land?'

'There's a certain greenishness, sir. Seaweed with attitude, really.'

'That's where the interesting stuff will happen, mark my words. I don't know what this universe is using for narrativium, but land's where we'll see any intelligent life.'

'How do you define intelligence?' said Ridcully. 'In the long term, I mean.'

'Universities are a good sign,' said the Dean, to general approval.

'You don't think that perhaps fire and the wheel might be more universally indicative?' said Ponder carefully.

'Not if you live in the water,' said the Senior Wrangler. 'The sea's the place here, I'll be bound. On this world practically noth­ing happens on the land.'

'But in the water everything's eating each other!'

'Then I'll look forward to seeing what happens to the last one served,' said the Senior Wrangler.

'No, when it comes to universities, the land's the place,' said the Dean. 'Paper won't last five minutes under water. Wouldn't you say so, Librarian?'

The Librarian was still staring into the omniscope.

'Ook,' he said.

'What's that he said?' said Ridcully.

'He said "I think the Senior Wrangler might be right",' said Ponder, going over to the omniscope. 'Oh ... look at this ...'

The creature had at least four eyes and ten tentacles. It was using some of the tentacles to manoeuvre a slab of rock against another slab.

'It's building a bookcase?' said Ridcully.

'Or possibly a crude rock shelter,' said Ponder Stibbons.

'There we are, then,' said the Senior Wrangler. 'Personal prop­erty. Once something is yours, of course you want to improve it. The first step on the road to progress.'

'I'm not sure it's got actual legs,' said Ponder.

'The first slither, then,' said the Senior Wrangler, as the rock slipped from the creatures tentacles. 'We should help it,' he added firmly. 'After all, it wouldn't be here if it wasn't for us.'

'Hold on, hold on,' said the Lecturer in Recent Runes. 'It's only making a shelter. I mean, the Bower Bird builds intricate nests, doesn't it? And the Clock Cuckoo even builds a clock for its mate, and no one says they're intelligent as such.'

'Obviously not,' said the Dean. 'They never get the numerals right, the clocks fall apart after a few months, and they generally lose two hours a day. That doesn't sound like intelligence to me.'

'What are you suggesting, Runes?' said Ridcully.

'Why don't we send young Rincewind down again in that virtu-ally-there suit? With a trowel, perhaps, and an illustrated manual on basic construction?'

'Would they be able to see him?'

'Er ... gentlemen ...' said Ponder, who had been letting the eye of the omniscope drift further into the shallows.

'I don't see why not,' said Ridcully.

'Er ... there's a ... there's ...'

'It's one thing to push planets around over millions of years, but at this level we couldn't even give our builder down there a heavy pat on the back,' said the Dean. 'Even if we knew which part of him was his back.'

'Er ... something's paddling, sir! Something's going for a paddle, sir!'

It was probably the strangest cry of warning since the famous 'Should the reactor have gone that colour?' The wizards clustered around the omniscope.

Something had gone for a paddle. It had hundreds of little legs.

Rincewind was in his new office, filing rocks. He'd worked out quite a good system, based on size, shape, colour and twenty-seven other qualities including whether or not he felt that it was a friendly sort of rock.

With careful attention to cross-referencing, he reckoned that dealing with just those rocks in this room would take him at least three quiet, blessed years.

And he was therefore surprised to find himself picked up bodily and virtually carried towards the High Energy Magic building holding, in one hand, a hard square light grey rock and, in the other hand, a rock that appeared to be well disposed to people.

'Is this yours?'roared Ridcully, stepping side to reveal the omniscope.

The Luggage was now bobbing contently a few metres offshore.

'Er ...' said Rincewind. 'Sort of mine.'

'So how did it get there?'

'Er ... it's probably looking for me,' said Rincewind. 'Sometimes it loses track.'

'But that's another universe!' said the Dean.

'Sorry.'

'Can you call it back?'

'Good heavens, no. If I could call it back, I'd send it away.'

'Sapient pearwood is meta-magical and will track its owner absolutely anywhere in time and space,' said Ponder.

'Yes, but not this bit!' said Ridcully.

'I don't recall "not this bit" ever being recorded as a valid sub­set of "time and space", sir,' said Ponder. 'In fact, "not this bit" has never even been accepted as a valid part of any magical invocation, ever since the late Funnit the Foregetful tried to use it as a last-minute addition to his famously successful spell to destroy the entire tree he was sitting in.'

'The Luggage may consist of a subset of at least n dimensions which may co-exist with any other set of >n dimensions,' said the Bursar.

'Don't pay any attention, Stibbons,' said Ridcully wearily. 'He's been spouting this stuff ever since he tried to understand HEX's write-out. It's completely gibberish. What's 'V, then, old chap?'

'Umpt,' said the Bursar.

'Ah, imaginary numbers again,' said the Dean. 'That's the one he says should come between three and four.'

'There isn't a number between three and four,' said Ridcully.

'He imagines there is,' said the Dean.

'Could we get inside the Luggage in order to physically go into the project universe?' said Ponder.

'You could try,' said Rincewind. 'I personally would rather saw my own nose off.'

'Ah. Really?'

'But the thought occurs,' said Ridcully, 'that we can use it to bring things back. Eh?'

Down under the warm water, the strange creature's stone struc­ture collapsed for the umpteenth time.

A week went past. On Tuesday a left-over snowball collided with the planet, causing considerable vexation to the wizards and destroying an entire species of net-weaving jellyfish of which the Senior Wrangler had professed great hopes. But at least the Luggage could be used to bring back any specimens stupid enough to swim into something sitting underwater with its lid open, and this included practically everything in the sea at the moment.

Life in the round world seemed to possess a quality so prevalent that the wizards even discussed the idea that it was some conceptual element, which was perhaps trying to fill the gap left by the non­existent deitygen.

'However,' Ridcully announced, 'Bloodimindium is not a good name.'

'Perhaps if we change the accent slightly,' said the Lecturer in Recent Runes. 'Blod-di-min-dium, do you think?'

'They've certainly got a lot of it, whatever we call it,' said the Dean. 'It's not a world to let a complete catastrophe get it down.'

Things turned up. Shellfish suddenly seemed very popular, A theory gaining ground was that the world itself was generating them in some sort of automatic way.

'Obviously, if you have too many rabbits, you need to invent foxes,' said the Dean, at one of the regular meetings. 'If you've got fish, and you want phosphates, you need seabirds.'