received its quietus; in the morning I’ll send it back to him, with my respectful compliments.  He’ll miss it if I don’t.—­Reflect! think of a huge bomb, filled with what we’ll call Atherton’s Magic Vapour, fired, say, from a hundred and twenty ton gun, bursting at a given elevation over the heads of an opposing force.  Properly managed, in less than an instant of time, a hundred thousand men, —­quite possibly more!—­would drop down dead, as if smitten by the lightning of the skies.  Isn’t that something like a weapon, sir?’

‘I’m not well!—­I want to get away!—­I wish I’d never come!’

That was all Woodville had to say.

’Rubbish!—­You’re adding to your stock of information every second, and, in these days, when a member of Parliament is supposed to know all about everything, information’s the one thing wanted.  Empty your glass, man,—­that’s the time of day for you!’

I handed him his tumbler.  He drained what was left of its contents, then, in a fit of tipsy, childish temper he flung the tumbler from him.  I had placed—­carelessly enough—­the second pellet within a foot of the edge of the table.  The shock of the heavy beaker striking the board close to it, set it rolling.  I was at the other side.  I started forward to stop its motion, but I was too late.  Before I could reach the crystal globule, it had fallen off the edge of the table on to the floor at Woodville’s feet, and smashed in falling.  As it smashed, he was looking down, wondering, no doubt, in his stupidity, what the pother was about,—­for I was shouting, and making something of a clatter in my efforts to prevent the catastrophe which I saw was coming.  On the instant, as the vapour secreted in the broken pellet gained access to the air, he fell forward on to his face.  Rushing to him, I snatched his senseless body from the ground, and dragged it, staggeringly, towards the door which opened on to the yard.  Flinging the door open, I got him into the open air.

As I did so, I found myself confronted by someone who stood outside.  It was Lessingham’s mysterious Egypto-Arabian friend,—­my morning’s visitor.

CHAPTER XVII

Magic?—­Or miracle?

The passage into the yard from the electrically lit laboratory was a passage from brilliancy to gloom.  The shrouded figure, standing in the shadow, was like some object in a dream.  My own senses reeled.  It was only because I had resolutely held my breath, and kept my face averted that I had not succumbed to the fate which had overtaken Woodville.  Had I been a moment longer in gaining the open air, it would have been too late.  As it was, in placing Woodville on the ground, I stumbled over him.  My senses left me.  Even as they went I was conscious of exclaiming,—­remembering the saying about the engineer being hoist by his own petard,

‘Atherton’s Magic Vapour!’

My sensations on returning to consciousness were curious.  I found myself being supported in someone’s arms, a stranger’s face was bending over me, and the most extraordinary pair of eyes I had ever seen were looking into mine.