“Only two!” announced Kenneth, as with a beaming face he came in, bringing a dozen sheets of paper, scrawled all over with sketches of trains of cars going uphill.
“Oh, have you done that one?”
“Yes; I’m sure I’m right. The three first cars would have taut chains, being pulled by the front engine; and the three last cars would be pushed up close together, with their chains hanging limp, because they are pushed by the back engine.”
“Oh, Ken, of course that’s right! Thank you, heaps! Now I’ll get the other two, if I have to sit up all night to do it!”
“What are they?” asked Mr. Hepworth, conscious of a faint hope that he might yet be of assistance.
“One’s a charade,” answered Patty. “Here it is:
“‘’Tis futile, Son, my first to use
To change to yours another’s views;
For one convinced against his will
Is of the same opinion still.