"We do."
"And it must cost you a great deal of money."
"It does."
"Have you ever thought of any way to avoid the waste of so much of it from the furnaces, then?"
"We certainly have, my lad."
"May I ask how you have tried to utilize it?"
"We have tried to devise some system by which it might all be consumed in the heating stoves. This, thus far has appeared impracticable for the reason that, by holding it in the furnaces we were likely to get a serious blow-out some time."
"That is the only way in which you have tried to use it?"
"Yes. Was your suggestion along this line?"