"And we won't see the test of the gun I'm most interested in," objected Tom. "If I could only"
He stopped as he noticed the sentry salute someone coming up from the rear. Tom and Ned turned to behold a pleasant-faced officer, who, at the sight of the young inventor, exclaimed:
"Well, well! If it isn't my old friend Tom Swift! So you got here on my permit after all?"
"Yes, Captain Badger," replied the lad, and then with a rueful face he added: "But it doesn't seem to be doing me much good. I can't get into the proving grounds."
"You can't? Why not?" and he looked sharply at the sentry.
"Very sorry, sir," spoke the man on guard, "but General Waller has left orders, Captain Badger, that no outsiders can enter the proving grounds when his new gun is being tested unless he countersigns the permits. And he's engaged just now. I'm sorry, but"
"Oh, that's all right, Flynn," said Captain Badger. "It isn't your fault, of course. I suppose there is no rule against my going in there?" and he smiled.
"Certainly not, sir. Any officer may go in," and the guard stepped to one side.
"Let me have that pass, Tom, and wait here for
