They had seated themselves at opposite sides of the table, and from an inside pocket Philip produced a small bundle of papers.  From these he drew forth a map, which he smoothed out under his hands.

“Yes, there are possibilities—­and more, Greggy,” he said.  “I didn’t ask you up here to help me fight air and moonshine.  And I’ve promised you a fight.  Have you ever seen a rat in a trap with a blood-thirsty terrier guarding the little door that is about to be opened?  Thrilling sport for the prisoner, isn’t it?  But when the rat happens to be human—­”

“I thought it was a fish,” protested Gregson, mildly.  “Pretty soon you’ll be having it a girl in a trap—­or at the end of a fish-line—­”

“And if I should?” interrupted Philip, looking steadily at him.  “What if I should say there is a girl—­a woman—­in this trap—­not only one, but a score, a hundred of them?  What then, Greggy?”

“I’d say there was going to be a glorious scrap.”

“And so there is, the biggest and most unusual scrap of its kind you ever heard of, Greggy.  It’s going to be a queer kind of fight —­and queer fighting.  And it’s possible—­very probable—­that you and I will get lost in the shuffle somewhere.  We’re two, no more.  And we’re going up against forces which would make a dozen South American revolutions look like thirty cents.  More than that, it’s likely we’ll be in the wrong locality when certain people rise in a wrath which a Helen of Troy aroused in another people some centuries ago.  See here—­”

He turned the map to Gregson, pointing with his finger.

“See that red line?  That’s the new railroad to Hudson’s Bay.  It is well above Le Pas now, and its builders plan to complete it by next spring.  It is the most wonderful piece of railroad building on the American continent, Greggy—­wonderful because it has been neglected so long.  Something like a hundred million people have been asleep to its enormous value, and they’re just waking up now.  That road, cutting across four hundred miles of wilderness, is opening up a country half as big as the United States, in which more mineral wealth will be dug during the next fifty years than will ever be taken from Yukon or Alaska.  It is shortening the route from Montreal, Duluth, Chicago, and the Middle West to Liverpool and other European ports by a thousand miles.  It means the making of a navigable sea out of Hudson’s Bay, cities on its shores, and great steel-foundries close to the Arctic Circle—­ where there is coal and iron enough to supply the world for hundreds of years.  That’s only a small part of what this road means, Greggy.  Two years ago—­you remember I asked you to join me in the adventure—­I came up seeking opportunity.  I didn’t dream then—­”

Whittemore paused, and a flash of his old smile passed over his face.