Read it through once

"Well," said Mr. Leopold, "there were two false starts, and Silver Braid must have galloped a couple of 'undred yards afore the Demon could stop him. There wasn't twopence-halfpenny worth of strength in him--pulling off those three or four pounds pretty well finished him. He'll never be able to ride that weight again.... He said afore starting that he felt weak; you took him along too smartly from Portslade the last time you went there."