‘Oh, but I do,’ replied Maltcassion. ‘You can see the visible spectrum of light, can’t you? Violet to red, yes?’

I nodded and sat down on a stone.

‘A pretty poor selection, I should think!’ said the Dragon, stopping his scratching, much to the relief of the oak tree. ‘I can see much farther; past visible light and into both ends of the electromagnetic spectrum.’

‘I don’t understand,’ I said, poking at the dry earth with a stick.

‘Put it this way,’ continued Maltcassion. ‘Only seeing the visible part of the spectrum is like listening to a symphony and hearing only the kettle drums. Let me describe what I can see: at the slow end of the spectrum lie the languorous long radio waves that move like cold serpents. Next are the bright blasts of medium and short radio waves that occasionally burst from the sun. I can see the pulse of radar that appears over the hills like the beam of a lighthouse and I can see the strange point-sources of your mobile phones, like raindrops striking a pond. I can see the buzz of microwaves and the strange thermal images of the low infrared. Beyond this is the visible spectrum that we share; then we are off again, past blue and out beyond violet to the ultraviolet. We go past google rays and manta rays and then shorter still to the curious world of the X-ray, where everything bar the most dense materials are transparent. I had a cousin once who claimed he could see beyond X-rays and into the realm of the gamma, but to be frank I have my doubts. I can see all this, a beautiful and radiant world quite outside your understanding. But it’s not all just for fun. You see this?’

He showed me one of his ears. It folded into a flap behind his eye and was of a delicate mesh-like construction, a bit like the ribs on a leaf. He unfurled it for my benefit, rotated it and then slotted it away again.

‘A Dragon’s senses are far more keen than yours. In the radio part of the spectrum I can see your television and radio signals. But more than that, I can read them. I can pick up sixty-seven TV channels and forty-seven radio stations. I thought you were great on the Yogi Baird show.’

‘How about cable?’

‘Luckily, no.’

‘Then you know what’s going on outside?’

‘Pretty much. Ever since Marconi started crackling away with his radio sets the planet has been getting progressively noisier. I can block it out the same way you can shut your eyes against light, but even on a sunny day you can still see the sun through your eyelids. It’s the same with me. It’s very like a bad case of visual ringing in the ears.’

‘Then you heard about the incident this morning? The truck the police thought was taken by you?’