Sentence:  "It is well, then that we should be frank," said the other. "We both think more than we have said; let us make a clean breast. This masked figure that you saw, did you recognise it?" / "Well, sir, it went so quick, and the creature was so <WSD>doubled up</WSD>, that I could hardly swear to that," was the answer. "But if you mean, was it Mr. Hyde?--why, yes, I think it was!" 
Meaning of the word marked with <WSD> tags:  To bend, bend over; to fold; to stoop.