“W’y, let me see,” said John, touching his forehead, “it was yesterday evenin’ w’en I came up with the northern express.”

“But many accidents might have happened since yesterday evening,” said Mrs Tipps, still in an anxious tone.

“That’s true, ma’am. All the engines on the Grand Trunk from the Pentland Firth to the Channel might have bu’sted their bilers since that time—but it ain’t likely,” replied John, with a bland smile.

“And—and what was my son doing when you passed him? Did you speak to him?”

“Speak to him! Bless your heart, ma’am,” said John, with another benignant smile, “I went past Langrye station at sixty mile an hour, so we hadn’t much chance to speak to each other. It would have been as much as we could have managed, if we’d tried it, to exchange winks.”

“Dreadful!” exclaimed Mrs Tipps in a low tone. “Is that the usual rate of travelling on your railway?”

“Oh dear no, ma’am. It’s only my express train as goes at that rate. Other expresses run between forty and fifty miles, an’ or’nary trains average about thirty miles an hour—goods, they go at about twenty, more or less; but they varies a good deal. The train I drives is about the fastest in the kingdom, w’ich is pretty much the same as sayin’ it’s the fastest in the world, ma’am. Sometimes I’m obleeged to go as high as nigh seventy miles an hour to make up time.”

“The fastest mail-coaches in my young days,” said Mrs Tipps, “used to go at the rate of ten miles an hour, I believe.”

“Pretty much so,” said John. “They did manage a mile or two more, I’m told, but that was their average of crawlin’ with full steam on.”

“And you sometimes drive at sixty or seventy miles an hour?”