Both Uses of

vehement

in

A Tale of Two Cities

He had no opportunity of saying, or so much as thinking, anything else, until he was clear of the Old Bailey; for, the crowd came pouring out with a vehemence that nearly took him off his legs, and a loud buzz swept into the street as if the baffled blue-flies were dispersing in search of other carrion.†
Chpt 2.3 *

Down, and up, and head foremost on the steps of the building; now, on his knees; now, on his feet; now, on his back; dragged, and struck at, and stifled by the bunches of grass and straw that were thrust into his face by hundreds of hands; torn, bruised, panting, bleeding, yet always entreating and beseeching for mercy; now full of vehement agony of action, with a small clear space about him as the people drew one another back that they might see; now, a log of dead wood drawn through a forest of legs; he was hauled to the nearest street corner where one of the fatal lamps swung, and there Madame Defarge let him go—as a cat might have done to a mouse—and silently and composedl†
Chpt 2.22

Definition:

marked by extreme intensity -- especially emotion such as anger