In chapter 22 Dimmesdale walks in the procession. What do people notice about his "gait and air" ?

They notice that his gait and air are filled with energy.

"It was the observation of those who beheld him now, that never, since Mr. Dimmesdale first set his foot on the New England shore, had he exhibited such energy as was seen in the gait and air with which he kept his pace in the procession. There was no feebleness of step, as at other times; his frame was not bent; nor did his hand rest ominously upon his heart."