How does Thomas Hardy use imagery in The Mayor of Casterbridge?

Imagery:

“Some folks want their luck buttered.”

“The man was of fine figure, swarthy, and stern in aspect; and he showed in profile a facial angle so slightly inclined as to be almost perpendicular. He wore a short jacket of brown corduroy, newer than the remainder of his suit, which was a fustian waistcoat with white horn buttons, breeches of the same, tanned leggings, and a straw hat overlaid with black glazed canvas. At his back he carried by a looped strap a rush basket, from which protruded at one end the crutch of a hay-knife, a wimble for hay-bonds being also visible in the aperture. His measured, springless walk was the walk of the skilled countryman as distinct from the desultory shamble of the general labourer; while in the turn and plant of each foot there was, further, a dogged and cynical indifference personal to himself, showing its presence even in the regularly interchanging fustian folds, now in the left leg, now in the right, as he paced along.”