There was a gasp of dismay.

"The clock never struck!"

Indignantly they set off to the library. Peace and quiet reigned also in the library. On the floor sat William and Jimmy gazing with frowns of concentration at an open page of "Things a Boy Can Do." Around them lay most indecently exposed the internal arrangements of the library clock.

"William! You wicked boy!"

William raised a frowning face.

"It's not put together right," he said, "it's not been put together right all this time. We're makin' it right now. It must have wanted mendin' for ever so long. I dunno how it's been goin' at all. It's lucky we found it out. It's put together wrong. I guess it's made wrong. It's goin' to be a lot of trouble to us to put it right, an' we can't do much when you're all standin' in the light. We're very busy—workin' at tryin' to mend this ole clock for you all."

"Clever," said Jimmy, admiringly. "Mendin' the clock. Clever!"

"William!" groaned his mother, "you've ruined the clock. What will your father say?"

"Well, the cog-wheels was wrong," said William doggedly. "See? An' this ratchet-wheel isn't on the pawl prop'ly—not like what this book says it ought to be. Seems we've got to take it all to pieces to get it right. Seems to me the person wot made this clock didn't know much about clock-making. Seems to me——"

"Be quiet, William!"