So that I think he might have got away altogether if he had not unfortunately run into a gooseberry net

And got caught by the large buttons on his jacket.

It was a blue jacket with brass buttons, quite new.
Peter gave himself up for lost and shed big tears;
But his sobs were overheard by some friendly sparrows.

Who flew to him in great excitement and implored him to exert himself.

Mr. McGregor came up with a sieve which he intended to pop on the top of Peter, but Peter wriggled out just in time.
Leaving his jacket behind him.