"Well, I'm not taking that chance," Jack went on. "Let's find out where it landed this time."
This they could do through their acquaintance with the military authority of the district where they were then staying. A telephonic report was at once received, giving the quarter where the shell had landed. It had fallen in one of the public squares, and though a big hole had been torn in the ground and pavement, and several persons killed and wounded, no material damage had been done. As for any military effect of the shell, it was nil.
The firing was done in the early evening hours, and Tom and Jack learned that, almost to the second, the shots were fifteen minutes apart.
There was one theory that an underground passage had been made in some manner to within a comparatively few miles of Paris, and from that point an immense mortar sent up the shells in a long trajectory.
Another theory was that traitors had let the Germans through the French lines at a certain place, so they could get near enough to Paris to bombard it.
And of course the gigantic airship theory had its adherents.
But, for a time at least, no one would admit
