Mr Wonka led the party over to a gigantic machine that stood in the
very centre of the Inventing Room. It was a mountain of gleaming metal
that towered high above the children and their parents. Out of the very
top of it there sprouted hundreds and hundreds of thin glass tubes, and
the glass tubes all curled downwards and came together in a bunch and
hung suspended over an enormous round tub as big as a bath.
'Here we go!' cried Mr Wonka, and he pressed three different buttons
on the side of the machine. A second later, a mighty rumbling sound came
from inside it, and the whole machine began to shake most frighteningly,
and steam began hissing out of it all over, and then suddenly the
watchers noticed that runny stuff was pouring down the insides of all
the hundreds of little glass tubes and squirting out into the great tub
below. And in every single tube, the runny stuff was of a different
colour, so that all the colours of the rainbow (and many others as well)
came sloshing and splashing into the tub. It was a lovely sight....
From 'The Great Gum Machine', Ch.20 of 'Charlie and the Chocolate
Factory' by Roald Dahl.