"Do you think you can solve it? Are you still going on with your plan to build the biggest cannon ever made?"
"I sure am, Ned, though I don't know that I'll make out any better than General Waller did. It's too bad his was a failure; but I think I see where he made some mistakes."
"Oh, you do; eh?" suddenly exclaimed a voice, and from a nearby parapet, where he had gone to look at one of the pieces of his gun, stepped General Waller. "So you think I made some mistakes, Tom Swift? Where, pray?"
"In making the breech. The steel jackets were of uneven thickness, making the strain unequal. Then, too, I do not think the powder was sufficiently tested. It was probably of uneven strength. That is only my opinion, sir."
"Well, you are rather young to give opinions to men who have devoted almost all their lives to the study of high explosives."
"I realize that, sir; but you asked me for my opinion. I shall hope to profit by your mistakes, too. That is one reason I wanted to see this test"
"Then you are seriously determined to make a gun that you think will rival mine."
"I am, General Waller."
"For what purpose—to sell to some foreign government?"
