There was a pulling, ripping sound, and he hesitated.

Then, feeling that he must get loose no matter what happened, he gave a mighty tug and was free.

But his trousers, though only slightly torn, were covered with glue.
Now that it was over, and the excitement was beginning to cool down, the minister began to feel a little natural anger at the perpetrator of the "Joke." His best trousers were spoiled, and the donation supper had been thrown into confusion.
"Who did it ?" was the question asked on every side.
The boys came slowly down from the gallery and mingled unnoticed with the throng.

Bob was a little worried.

He had not meant to humiliate the minister, but had counted on Captain Spark getting stuck to the chair.